JP5750364B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner.

  The air conditioner adjusts the indoor environment by circulating the air in the installed room to the heat exchanger, making it conditioned air by heating, cooling, dehumidification, etc., and blowing it into the room by a blower fan. In order to blow conditioned air from the indoor unit, a vertical wind direction plate is pivotally arranged to adjust the wind direction in the vertical direction, and a plurality of left and right angles that are adjustable in the horizontal direction of the outlet are adjustable for adjusting the wind direction in the horizontal direction. Wind direction plates are arranged at predetermined intervals.

  By controlling the upper and lower wind direction plates and the left and right wind directions in combination, the conditioned air whose wind direction is controlled is blown in a predetermined direction. Among them, the up-and-down air direction plates are essential for effectively cooling the room by sending air downward slightly during cooling and downwardly during heating. At this time, it is inevitable that an air flow directly from the air blowing port to the air intake port is generated, and if this air flow increases, a so-called short circuit is formed, and control of air conditioning is disturbed.

  During heating operation, the warm air that is blown out tends to rise due to natural convection, which is encouraged.In particular, at the start of heating operation, the temperature difference between the room temperature and the blown air is large, and the effect of natural convection increases. Ascending airflow is likely to occur, and it is difficult for warm blown air to reach the floor surface, resulting in greatly impairing the heating effect of the feet. For this reason, the device which reduces this rising airflow as much as possible is needed.

  The air conditioner may employ a cross-flow fan that can obtain a nearly uniform wind speed in the direction of the rotation axis in order to deliver the blown wind to a distant part of the air-conditioned space with a low noise level. In many cases, however, in this case, air flows along the flow line of the circulating vortex created by the once-through fan, so an air flow from the air outlet to the air inlet tends to occur. Air flows through a large gap between the wind path and the upper wind direction plate formed by the support of the wind direction plate, and the generation of the downward air flow is not effectively performed. Various measures have been taken to partially address these problems. As this type of prior art, Japanese Patent No. 4618366 and Japanese Patent Laid-Open No. 2007-093092 are known.

  Patent Document 1 discloses an air conditioner that can swing the blowing direction up and down while suppressing diffusion of the blowing air flow in the swing operation of the horizontal flap during the cooling operation or the heating operation. That is, a diffuser that is rotatably supported on the upper side of the blowout passage and whose lower surface forms part of the upper side of the blowout passage, and a horizontal flap that is rotatably supported on the lower side of the diffuser of the blowout passage. When the diffuser and the horizontal flap perform a swing operation that repeats vertical movement, the diffuser has a region that swings simultaneously with the horizontal flap, and in the region where the diffuser and the horizontal flap swing simultaneously, When the diffuser is rotating upward, the horizontal flap is rotated upward, while when the diffuser is rotating downward, the horizontal flap is rotated downward.

  Patent Document 2 discloses an air conditioner capable of effectively deflecting the wind direction in the vertical direction while suppressing the decrease in the air volume as much as possible. That is, a blower fan is provided in an air passage connecting the suction port and the blowout port, and the vertical wind direction plate 7 and the diffuser 12 that open and close the blowout port and deflect the wind direction in the vertical direction are rotatably provided. In an air conditioner in which an auxiliary up-and-down airflow direction plate 9 accommodated inside is rotatably supported by an auxiliary support shaft portion 10, the support shaft portion 10 is provided with a support shaft provided in an air passage that forms a blowout port. It is provided on the downstream side of the section.

Japanese Patent No. 4618366 JP 2007-093092 A

  In Patent Document 1, a diffuser that closes the gap between the wind direction plate and the housing is used so that the blowing direction can be swung up and down while suppressing the diffusion of the blowing air flow. The length dimension in the flow direction of the air flow of the diffuser supported movably is extremely shorter than the length dimension in the flow direction of the air flow of the horizontal flap rotatably supported on the lower side of the diffuser. For this reason, depending on the air-conditioned environment, there is a possibility that a short circuit phenomenon occurs in which the airflow blown in the horizontal direction is sucked into the suction port, and sufficient air conditioning capability may not be exhibited. Also, because the length of the diffuser in the flow direction of the airflow is short, sufficient directivity is not given to the airflow that flows downward (floor direction) during heating, and the airflow rises without reaching the floor surface. As a result, there is a risk that the vicinity of the floor cannot be comfortably warmed or that it becomes necessary to make strong winds, resulting in increased driving noise.

  In Patent Document 2, an auxiliary up-and-down wind direction plate 9 is used to prevent a gap between the up-and-down air direction plate 7 and the housing. However, the flow of the air flow of the air blown downward (floor direction) during heating is used. Due to the structure in which the two air currents are dispersed, the discharge flow rate becomes slow, and there is a risk of rising without reaching the floor surface. As a result, the vicinity of the floor surface cannot be comfortably heated, or there is a risk that the driving noise will increase due to the necessity of making the air blow strong. Furthermore, since the auxiliary up-and-down wind direction plate 9 is short, a short circuit phenomenon occurs in which the airflow blown in the horizontal direction is sucked into the suction port, and there is a possibility that sufficient air conditioning capability cannot be exhibited.

  An object of the present invention is to provide an air conditioner that can sufficiently ensure the air-conditioning capability by sufficiently ensuring the directivity of the air flow or the air blowing performance in both the horizontal direction and the downward direction.

The problems to be solved by the present invention include an upper vertical wind direction plate and a lower vertical wind direction plate that deflect the air direction of the blown air up and down at the air blowout port, and a lower plate that is located above the air blowout port and that constitutes the casing. And the upper wind direction plate has a first surface and a second surface connected to the rotation shaft of the upper wind direction plate by the first surface, and the lower panel is the upper surface An angle of the lower upper and lower wind direction plate in the air blowing state near the horizontal direction is set to an angle of the first surface rather than an angle of the second surface. near the angle of the lower horizontal flaps at blowing state in the downward direction, the first than the angle of the plane near rather the angle of the second surface, rotation of the upper louver during heating operation In the range, the gap between the rotation shaft of the upper wind direction plate and the groove portion of the lower panel is minimized. The minimum clearance during heating at the rotation position of the side wind direction plate is the rotation range of the upper wind direction plate during cooling operation, and the clearance between the rotation axis of the upper wind direction plate and the groove portion of the lower panel is minimized. This is achieved by being smaller than the cooling minimum gap at the rotational position of the upper wind direction plate .

  In addition, the surface formed so as to be bent upwardly from the downstream end of the airflow of the surface forming the extension surface so as to cover the front of the lower front portion of the indoor unit. The appearance of the indoor unit can be improved. Moreover, it is preferable on the ventilation performance to a horizontal direction and a downward direction that the partial angle bent in the shape of a dogleg of the said upper wind direction board is the range of 114 to 156 degree | times.

The air conditioner according to a second aspect of the present invention is the air conditioner according to the first aspect, wherein the first surface has a concave shape in the windward direction in a downward blowing state .

  The air conditioner according to a fourth aspect of the present invention is the air conditioner according to the first aspect, wherein the upper side of the air conditioner from the rotation position of the upper wind direction plate during the cooling maximum capacity operation to the closed state of the upper wind direction plate at the time of stoppage is provided. The rotation angle of the wind direction plate is 18 to 51 degrees.

The air conditioner according to claim 5 in the air conditioner of claim 1, the length Saga of the first surface, but from 40 to 60% of the height of the blowing air passage of the air outlet port .

  According to the first aspect of the present invention, there is provided an air conditioner that can sufficiently ensure the directivity of the air flow or the air blowing performance in both the horizontal direction and the downward direction and sufficiently exhibit the air conditioning capability. be able to.

  According to the third aspect, the short circuit during heating is suppressed, and the blown air can be delivered to the vicinity of the floor surface.

  According to the fourth aspect of the present invention, the periphery of the air outlet is appropriately configured, and the exterior of the indoor unit is made smooth with little unevenness when stopped, and the human sensor is concealed by the upper wind direction plate to create a calm atmosphere in the room. Do not disturb.

  According to the fifth aspect, the blown air reaches the floor surface at the start of the heating operation and exhibits an excellent heating effect.

  According to the sixth aspect, a short circuit is prevented during heating, and the blown air is effectively turned downward.

The block diagram of the air conditioner of Example 1. FIG. The front view of the indoor unit of the air conditioner. The sectional side view of the indoor unit. The simplified sectional view at the time of the operation stop of the indoor unit. The simplified expanded sectional view at the time of the operation stop of the indoor unit. The perspective view at the time of the operation stop of the indoor unit. The perspective view at the time of the air_conditionaing | cooling operation | movement of the indoor unit mainly. The perspective view at the time of heating operation of the indoor unit mainly. The enlarged view of the upper wind direction board rotation part of the indoor unit. The enlarged view of the upper wind direction board rotation part of the indoor unit. Sectional drawing of the blower outlet at the time of the air_conditioning | cooling and ventilation operation | movement of the indoor unit mainly. The enlarged view of the upper wind direction board rotation part mainly at the time of ventilation operation of the indoor unit. Sectional drawing of the blower outlet of the indoor unit of the air conditioner of Example 2. FIG. The enlarged view of the rotation part of the upper wind direction board at the time of the air_conditioning | cooling and ventilation operation | movement of the indoor unit mainly. The perspective view of an upper wind direction board. The perspective view of the wind direction piece of a same upper side wind direction board. The detail of the rotation axis | shaft part of the wind direction piece of an upper wind direction board. Arrangement explanatory drawing of room information sensors. Explanatory drawing of the detection range of indoor information sensors. Angle explanatory drawing with respect to the horizontal surface of upper wind direction board related components. Angle explanatory drawing with respect to the axial angle reference line of an upper wind direction board related component. Wind flow around the air outlet during cooling. Wind flow around the outlet when heating operation starts. The flow of wind around the air outlet during cooling and blowing. Wind flow around the outlet during heating. Sectional drawing of the blower outlet of the indoor unit of the air conditioner of Example 3. FIG. The enlarged view of the rotation part of the upper wind direction board at the time of the air_conditionaing | cooling driving | operation mainly of the indoor unit. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. Sectional drawing of the blower outlet of the indoor unit of the air conditioner of Example 4. FIG. The enlarged view of the rotation part of the upper wind direction board at the time of the air_conditionaing | cooling driving | operation mainly of the indoor unit. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. Sectional drawing of the blower outlet of the indoor unit of the air conditioner of Example 5. FIG. The enlarged view of the rotation part of the upper wind direction board at the time of the air_conditionaing | cooling driving | operation mainly of the indoor unit. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. Sectional drawing of the blower outlet of the indoor unit of the air conditioner of Example 6. FIG. The enlarged view of the rotation part of the upper wind direction board at the time of the air_conditioning | cooling and ventilation operation | movement of the indoor unit mainly. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit. The enlarged view of the rotation part of the upper wind direction board at the time of the other driving | running state of the indoor unit.

  Hereinafter, the present embodiment will be described with reference to the drawings.

  Hereinafter, the present invention will be described using a wall-mounted air conditioner having a horizontally long outlet as an example.

  First, the overall configuration will be described with reference to FIGS. FIG. 1 is a configuration diagram of an air conditioner according to a first embodiment. FIG. 2 is a front view of the indoor unit of the air conditioner. FIG. 3 is a side sectional view of the indoor unit.

  In addition, although an Example demonstrates the wall-hanging type air conditioner which has a horizontally long blowing outlet, this invention is not limited to this, The ceiling embedding type | mold with a substantially rectangular blowing air channel or wall embedding Of course, the present invention can be easily applied to a shape or window type air conditioner, and the same effect can be exhibited.

(Outline of the configuration of this embodiment)
In the air conditioner having a plurality of up and down wind direction plates that deflect the air direction of the blown air up and down at the air outlet, an air flow is generated between the upper wind direction plate of the plurality of up and down wind direction plates and the upper surface of the blowout air path. It is provided so as to be freely rotatable in the vertical direction so as not to flow, and in the air blowing state in the vicinity of the horizontal direction, a surface that forms an extension surface of the upper surface of the blowing air passage, and a downstream side of the airflow of the surface that forms this extension surface It is comprised from the surface formed so that it might bend in the shape of a circle from the edge part upwards.

  Then, in the air blowing state in the vicinity of the horizontal direction, a flow path is formed between the surface up to the portion bent in the above-mentioned character shape and the surface up to the downstream end of the airflow of the lower wind direction plate, A surface that forms an extended surface of the upper surface of the blowing air passage in a state of blowing air in the direction, a surface that is formed to be bent in a dogleg shape from the end of this surface, and a downstream side of the airflow of the lower wind direction plate It was set as the structure which forms a flow path between the surfaces to an edge part.

  A surface formed so as to be bent upward in a U-shape from the downstream end of the airflow of the surface forming the extended surface is formed so as to cover the front of the lower front portion of the indoor unit. Thereby, the external appearance of an indoor unit can be improved. Further, when the partial angle of the upper wind direction plate bent in the shape of a dogleg is in the range of 114 to 156 degrees, both the horizontal direction and the downward blowing performance are preferable.

  By adopting the above configuration, the length dimension of the upper wind direction plate and the lower wind direction plate can be made to be substantially the same length in either the horizontal state or the lower direction state, without being extremely shortened. As a result, the flow path between the upper wind direction plate and the lower wind direction plate can be lengthened in both the horizontal direction and the lower direction. As a result, short circuits can be suppressed both in the horizontal state and in the downward direction, or sufficient air blowing performance in the horizontal direction and in the downward direction (floor surface direction) can be ensured and the air conditioning capability can be sufficiently exhibited. .

(Detailed configuration of this embodiment)
The air conditioner 1 connects the indoor unit 2 and the outdoor unit 6 with a connection pipe 8 to air-condition the room. The indoor unit 2 attaches the unit frame 22 to the housing base 21, covers the unit frame 22 with the decorative frame 23, the lower panel 24, and the dew tray 35, and attaches the decorative panel 25 to the unit frame 22 in a detachable manner in the front. Configured. Further, during operation, the suction panel 251 in front of the decorative panel 25 is rotatable about the lower part as a fulcrum as shown in FIG.

  A suction port 27 for sucking room air is provided above the indoor unit 2, and a blowout port 28 for blowing conditioned air from the indoor unit 2 into the room is provided below the indoor unit 2. The air outlet 28 can be opened and closed by the rotation of the upper wind direction plate 29 and the lower wind direction plate 29 'attached to the front casing 280a and the rear casing 280b. The upper wind direction plate 29 and the lower wind direction plate 29 'blow the air into the room by vertically controlling the airflow blown from the indoor unit 2.

  Filters 231 and 231 ′ are installed inside the decorative panel 25 and the suction port 27 on the upper surface of the indoor unit 2, and are detachably attached to the unit frame 22. A heat exchanger 33 composed of pipes and fins is disposed inside the filters 231 and 231 ′. The heat exchanger 33 is disposed so as to surround the blower fan 311 having substantially the same horizontal length. The blower fan 311 is disposed between the front casing 280a and the rear casing 280b, and the rotation shaft of the blower fan 311 is connected to the blower motor.

  A blowout air passage 280 is formed between the blower fan 311 and the blowout port 28 by a front casing 280a and a rear casing 280b, and left and right airflow direction plates 285 are arranged in the blowout air passage 280 at predetermined intervals in the left-right direction.

  As described above, the outer casing of the indoor unit 2 is formed by the casing 20 including the casing base 21, the unit frame 22, the decorative frame 23, the lower panel 24, and the like, and the decorative panel 25, the blower fan 311, The basic unit such as the filters 231 and 231 ′, the heat exchanger 33, the dew tray 35, the left and right wind direction plates 285, the suction panel 251, the upper wind direction plate 29, and the lower wind direction plate 29 ′ are attached to constitute the indoor unit 2. To do.

  In the back of the decorative panel 25, an electrical component part of the electrical component unit is provided. The control board of the electrical component unit is provided with a microcomputer, receives a signal sent from the remote controller 5 via the light receiving unit, and controls the operation of the air conditioner according to the signal. At this time, the operation mode can be confirmed by turning on and off the lamp of the display unit according to the operation mode.

  When the operation is started, the suction panel 251 of the decorative panel 25 is rotated forward with the lower portion as a fulcrum and inclined by a predetermined angle, and the upper front portion of the indoor unit 2 is opened. The upper wind direction plate 29 and the lower wind direction plate 29 ′ are rotated by being controlled by the microcomputer to open and close the air outlet 28 of the indoor unit 2. When the indoor unit 2 receives the operation signal from the remote controller 5, the outdoor unit 6 also operates. The refrigerant sent from the outdoor unit 6 circulates through the heat exchanger 33 via the connection pipe 8. The blower motor connected to the blower fan 311 is driven in accordance with the operating state by microcomputer control.

  Next, the flow from the air suction to the blowout will be described. When the blower fan 311 rotates clockwise in FIG. 3, room air is sucked from the upper suction port 27 on the upper surface and the opening (front suction port 27 ′) of the decorative panel 25. Then, when the sucked airflow passes through the filters 231 and 231 ′, dust and the like are removed by the meshes of the filters 231 and 231 ′ and flow into the indoor unit 2.

  The airflow further flows into the heat exchanger 33, and after heat exchange, the airflow is sucked into the blower fan 311. The airflow blown from the blower fan 311 passes through the left and right wind direction plates 285 and the upper and lower wind direction plates 29 and 29 'provided downstream of the casings 280a and 280b, and is blown into the room with the wind direction controlled. On the other hand, when the operation is stopped, the driving of the blower fan 311 is stopped, the suction panel 251 of the decorative panel 25 is rotated to close the opening at the front upper portion as indicated by the dotted line in FIG. , 29 'are rotated to close the outlet 28 as shown by the dotted line in FIG.

  In addition, a dew tray 35 is disposed below the heat exchanger 33 and receives condensed water generated in the heat exchanger 33 during cooling operation or dehumidifying operation. The condensed water collected in the dew tray 33 is discharged outside through the drain pipe 37. In this way, an air flow path is formed and the blower fan 311 is driven, so that indoor air is sucked from the suction ports 27 and 27 ′, passes through the filters 231 and 231 ′, and is heated in the heat exchanger 33. After the replacement, the air is blown into the room from the air outlet 28.

  Next, the definition of words and phrases related to the arrangement of the peripheral parts around the outlet will be described with reference to FIGS. FIG. 4 is a simplified cross-sectional view when the indoor unit is stopped. FIG. 5 is a simplified enlarged cross-sectional view when the indoor unit is stopped.

  In the air conditioner of the embodiment, a front casing 280a, an upper wind direction plate 29, a lower wind direction plate 29 ', sensors 392 and 393, a sensor mounting board 390, and the like are disposed around the outlet. In describing the present invention in detail, terms relating to the mounting of these parts are defined. The front casing 280a constitutes a blowout air path and plays a role of guiding the blown air from the cross-flow fan 311. The front casing angle indicated by α in FIG. 4 greatly affects the blown-out direction of the blown air.

  Inclination β of the lower wind direction plate when the lower wind direction plate 29 ′ is closed (represented by the inclination of the line segment connecting the front edge and the rear edge of the airfoil of the lower wind direction plate 29 ′, and is referred to as the blowing surface storage angle ) Is closely related to the outer shape of the air conditioner, and greatly affects the control of the blowing direction of the blown air. The direction λ of the sensors 392 and 393 greatly affects the appropriateness of the collected room information when the room information is obtained and the air conditioner is controlled. In addition, the blowing surface of the blowing surface storage angle refers to a virtual surface at the opening end of the blowing port.

  The sensors 392, 393, etc. are generally mounted with the sensor direction λ perpendicular to the sensor mounting board 390. The surface of the sensor mounting board 390 is referred to as a sensor surface FS, and the inclination thereof is referred to as a sensor surface angle γ. . The sensor surface angle γ is in a relationship between the sensor direction λ and an additional angle. The direction of the wind direction surface 291d when the upper wind direction plate 29 is stored and the sensors are hidden when the air conditioner is stopped is referred to as a wind direction surface storage angle ι.

  The direction of the wind direction surface 291d is the direction of the wind direction surface representative straight line DL connecting the tip of the wind direction surface and a point P of the wind direction surface 291d that is the highest point from a reference line BL of the upper wind direction plate 29 described later. Further, the wind direction storage angle ι is preferably substantially equal to the sensor surface angle γ in order to hide the sensors with the minimum area.

  Next, the structure of the upper wind direction plate that deflects the wind direction in the vertical direction will be described with reference to FIGS. 2, 8 (b), and 10 (b). FIG. 8 is a perspective view of the indoor unit mainly during heating operation, and FIG. 8B is a cross-sectional view of the outlet at that time. FIG. 10 is an enlarged view of the upper wind direction plate rotating portion of the indoor unit. FIG. 10A is mainly during the air blowing / weak heating operation, and FIG. 10B is mainly during the strong heating operation.

  The upper wind direction plate 29 includes a wind direction piece 291 and shaft covers 292 and 293, and the rotation shaft 29 a is formed by fixing the shaft cover 292 and 293 to the rotation shaft portion 291 a of the wind direction piece 291 with a shaft cover fixing screw 298. Is done. The wind direction piece 291 has a shape (character shape) in which the rotation shaft portion 291a and the wind direction surface 291d are connected by the wind shielding surface 291e.

  The rotating shaft 29 a of the upper wind direction plate 29 is supported by support portions 24 a and 24 b provided at both ends of the groove portion 24 c of the lower panel 24 constituting the housing 20. A support shaft 24e is provided in the support portion 24a, and a drive motor 287 is provided in the support portion 24b. The upper wind direction plate 29 is suspended between them and attached to the housing 20. The driving force of the drive motor 287 is received by the rotation shaft 29 a of the upper wind direction plate 29 via the transmission member 296 and rotated.

  The groove portion 24c of the lower panel 24 has a cylindrical concave surface centered on the position of the axis of the rotation shaft 29a when the upper wind direction plate 29 is attached to the housing 20, and the rotation shaft 29a is in the groove portion 24c. It can be turned without any trouble. Reference numeral 291b denotes a shaft-side gap forming portion formed on the rotating shaft 29a, which holds the gap Gp between the rotating shaft 29a and the cylindrical concave surface of the groove 24c at a small value.

  Next, the operation of the upper wind direction plate that deflects the wind direction in the vertical direction will be described with reference to FIGS. FIG. 6 is a perspective view when the operation of the indoor unit is stopped, and FIG. 6B is a cross-sectional view of the outlet at that time. FIG. 7 is a perspective view of the indoor unit mainly during cooling operation, and FIG. 7B is a cross-sectional view of the outlet at that time. FIG. 9 is an enlarged view of the upper wind direction plate rotating portion of the indoor unit, (a) when stopped, and (b) mainly during cooling operation.

  When the operation is stopped, as shown in FIG. 6, the suction panel 251, the upper wind direction plate 29, and the lower wind direction plate 29 ′ close the front air suction port 27 ′ and the air outlet port 28. In this state, the appearance of the indoor unit 2 of the air conditioner has a shape with less unevenness, does not disturb the indoor atmosphere, is easy to clean, and prevents dust from entering the indoor unit.

  Next, the flow of conditioned air in the groove will be described with reference to FIGS.

  During the cooling operation, the upper wind direction plate 29 and the lower wind direction plate 29 ′ are substantially parallel to the front casing 280a so that the wind shielding surface 291e of the upper wind direction plate 29 and the lower wind direction plate 29 ′ are maximized. Then, it is rotated as shown in FIG. 7B, and the blown air flows as indicated by the black arrows. At this time, as shown in FIG. 9B, the gap Gp between the shaft side gap forming portion 291 b provided on the rotating shaft 29 a of the upper wind direction plate 29 and the groove portion 24 c of the lower panel 24 is attracted by the blown air. Passing through, the indoor air above the upper wind direction plate 29 flows into the blowing air passage.

  The inflowing room air flows between the blown air and the upper wind direction plate 29 and prevents the blown air from directly touching the upper wind direction plate 29. For this reason, the upper wind direction plate 29 is not cooled, is kept at a temperature close to the room temperature, and even if it touches indoor air having a high absolute humidity, no condensation occurs, and no dew condensation drops.

  If the gap Gp between the rotating shaft 29a of the upper wind direction plate 29 and the groove 24c of the lower panel 24 is too narrow and the amount of room air that is attracted by the blown air and flows into the blown air passage is small, the upper wind direction plate 29 Can be isolated only partially from the blown air, and when the temperature of the upper wind direction plate 29 decreases and falls below the dew point temperature of the room air, moisture in the room air condenses there, but the rotating shaft 29a of the upper wind direction plate 29 By adjusting the gap Gp between the groove portion 24c of the lower panel 24, it is possible to suppress a small amount of dew condensation and prevent the dew condensation water from dripping into the room.

  At this time, the blown air is blown out from the air blowing port 28 like a jet at substantially the same speed and direction as the air flowing in the portion near the air blowing port 28 of the front casing 280a, and is separated from the wind direction surface 291d without being diffused much. Go straight into the room. For this reason, the wind direction surface 291d is further cooled by the blown air, and is hardly cooled. Therefore, the back surface of the wind direction surface 291d is hardly cooled, and the dew condensation phenomenon that occurs when the indoor air touches the cooled portion and moisture in the air condenses is suppressed.

  In this case, condensation is increased on the upper wind direction plate 29 when the humidity in the room is particularly high. In such a case, a measure such as applying a heat insulating material to cover the position where the condensation has occurred on the upper wind direction plate 29 is taken. Thus, there is no risk that the condensed water drops will fall into the room and soil the surroundings. Even when the amount of indoor air attracted in this way is small, the thickness of the heat insulating material applied to the upper wind direction plate 29 can be reduced, thus saving resources.

  During the heating operation, the upper wind direction plate 29 and the lower wind direction plate 29 ′ send the blown air downward as much as possible to keep the feet warm, and the wind direction surface 291d of the upper wind direction plate 29 and the lower wind direction plate 29 ′ are substantially parallel. Then, it is rotated as shown in FIG. 8B, and the blown-out air flows as indicated by black arrows. At this time, as shown in FIG. 10B, the wind direction piece 291 of the upper wind direction plate 29 is brought into contact with the groove 24c of the lower panel 24 in the vicinity of the intersection line of the front casing 280a.

  As a result, there is almost no blown air that passes between the rotating shaft 29a of the upper wind direction plate 29 and the groove 24c of the lower panel 24 and leaks to the back surface of the wind direction surface 291d and the wind shield surface 291e, and the blown air is effectively removed. Can be sent in a downward direction. If the wind direction piece 291 of the upper wind direction plate 29 is not brought into contact with the groove 24c of the lower panel 24 and the front casing 280a due to various circumstances, the rotation shaft 29a of the upper wind direction plate 29 and the lower panel 24 are not contacted. The blown air leaks through the gaps 24c.

  Even in this case, by making the gap of this portion as small as possible, the amount of the blown-out air that leaks out can be made small, and the heating effect and the effect of sending the blown air near the feet can be maintained without causing a large difference.

  Next, another usage pattern of the upper wind direction plate 29 will be described with reference to FIGS. 11 and 12. FIG. 11 is a cross-sectional view of the outlet of the indoor unit mainly during the cooling / air blowing operation, and FIG. 11B is an enlarged view of the upper wind direction plate rotating portion at that time. FIG. 12 is an enlarged view of the upper wind direction plate rotating portion of the indoor unit mainly during the air blowing operation.

  At the time of operation without cold air such as air blowing operation, the lower wind direction plate 29 'is rotated in a desired direction, and the wind direction surface 291d of the upper wind direction plate 29 is moved to the lower wind direction plate as shown in FIG. When the air is rotated to a position substantially parallel to 29 ', the blown air is compressed by the wind shielding surface 291e of the upper wind direction plate 29 and is rectified by being sandwiched between the wind direction surface 291d of the upper wind direction plate 29 and the lower wind direction plate 29'. It becomes a parallel flow and flows like a black arrow.

  In this way, after the flow is reduced, the flow is rectified into a parallel flow, whereby the blown air becomes a parallel flow with a high wind speed and reaches a farther distance. By adjusting the parallel direction formed by the wind direction surface 291d of the upper wind direction plate 29 and the lower wind direction plate 29 'to an arbitrary direction, the wind can be sent to a wide range in the room, and further power saving is required. It is highly effective as a method for obtaining a cool feeling instead of cooling.

  In this case, as shown in FIG. 11B, the room air flows into the blowout air passage 280 formed by the front casing 280a through the gap between the rotation shaft 29a and the groove 24c. Between this state and the state of FIG. 10 (a), as shown in FIG. 12, the blown-out air that is about to leak out and the indoor air that is about to flow in compete with each other, and a gap between the rotating shaft 29a and the groove 24c is formed. There is almost no air flow. A detailed description of these phenomena will be described later with reference to FIGS.

  Thus, the air conditioner of the embodiment has a plurality of vertical wind direction plates that deflect the air direction of the blown air up and down at the air outlet, and supports the uppermost vertical wind direction plate (upper wind direction plate). A groove for accommodating the rotation shaft of the upper wind direction plate is formed between the support portions of the housing on the machine body side, and the rotation shaft and the outer surface of the rotation shaft are connected to the rotation shaft during the rotation operation. A gap forming portion that keeps the gap between the groove portion to a minimum is formed, and the wind direction surface 291d of the upper wind direction plate and the rotation shaft are connected by a wind shielding surface 291e.

  As a result, the upper wind direction plate is half embedded in the groove portion of the casing, and the amount of air leaking through the gap therebetween is small, and almost all of the blown air flowing along the front casing is blocked by the wind shielding surface. Then, the air flows to the wind direction surface 291d and blows out in the direction intended by the user, so that the short circuit can be effectively suppressed.

  Further, since the rotating shaft and the wind direction surface 291d are connected by the wind shielding surface 291e, the structure is intermittent in the horizontal direction as in the conventional support mechanism with the support of the upper wind direction plate. Since it becomes a characteristic structure, visual noise can be reduced, and a comfortable environment can be provided to the user of the air conditioner in a calm atmosphere.

  When the air volume is maximized, the upper wind direction plate is rotated so that the wind shielding surface 291e is inclined substantially the same as the inclination of the front casing. At this time, the blown air is blown out from the air blowout port like a jet at almost the same speed and direction as the air flowing through the portion near the air blowout port of the front casing, moves away from the wind direction surface 291d without much diffusion, and goes straight into the room. Go. For this reason, the wind direction surface 291d is less cooled by the blown air and is not cooled much. Therefore, the back surface of the wind direction surface 291d is not cooled so much, and the phenomenon of dew condensation caused by condensation of moisture in the air due to the indoor air touching the cooled portion is suppressed.

  When operating without cold air, such as when blowing air, the lower wind direction plate is rotated in a desired direction, and the wind direction surface 291d of the upper wind direction plate is rotated to a position substantially parallel to the lower wind direction plate. The air is contracted by the wind shielding surface 291e of the upper wind direction plate, and is rectified by being sandwiched between the wind direction surface 291d of the upper wind direction plate and the lower wind direction plate to become a parallel flow.

  In this way, after the flow is reduced, the flow is rectified into a parallel flow, whereby the blown air becomes a parallel flow with a high wind speed and reaches a farther distance. By adjusting the parallel direction created by the wind direction surface 291d of the upper wind direction plate and the lower wind direction plate to an arbitrary direction, the wind can be sent to a wide range in the room, and further power saving is required. It is highly effective as a method for obtaining a cool feeling instead.

  In this way, by connecting the rotation shaft and the wind direction surface 291d with the wind shielding surface 291e, and by making the gap between the rotation shaft of the upper wind direction plate and the groove portion of the housing almost no air flow, When it is desired to make the blown air downward, such as during heating, the wasteful flow that causes a short circuit by flowing from the upper wind direction plate to the air inlet side can be greatly cut.

  Therefore, it is possible to provide an air conditioner that effectively suppresses short circuits, has low visual noise, is easy to maintain, and does not disturb the indoor atmosphere.

  Further, the air conditioner of the embodiment is arranged so that the room air flows into the blowout air passage 280 formed by the front casing 280a from the gap between the rotation shaft of the upper wind direction plate and the groove portion of the lower panel during the cooling operation. Controls the inclination of the wind direction plate.

  As a result, the upper wind direction plate is prevented from directly touching the cold blown air, the temperature of the upper wind direction plate is maintained, the condensation of the upper wind direction plate is suppressed, the dripping of the condensation into the room is also suppressed, The risk of getting dirty is reduced.

  For this reason, it is possible to provide an air conditioner with less condensation and less risk of soiling the room.

  In addition, the air conditioner of the embodiment has a heating range at a rotation position of the upper wind direction plate in which the gap between the rotation axis of the upper wind direction plate and the groove portion of the lower panel is minimized in the rotation range of the upper wind direction plate during the heating operation. The minimum clearance is smaller than the minimum cooling clearance at the rotation position of the upper wind direction plate where the clearance between the rotation axis of the upper wind direction plate and the groove of the lower panel is the smallest within the range of rotation of the upper wind direction plate during cooling operation. .

  As a result, during heating operation, the amount of the blown air that leaks into the room through the gap between the rotating shaft of the upper wind direction plate and the groove of the lower panel is reduced, the short circuit is suppressed, and the amount of the blown air that leaks out Therefore, the downward blowing air can be efficiently delivered to the floor surface.

  For this reason, the short circuit at the time of heating is suppressed and the air conditioner which can deliver blowing air to the floor surface vicinity can be provided.

  Further, the air conditioner of the embodiment has a plurality of upper and lower air direction plates that deflect the air direction of the blown air up and down at the air outlet, and the rotation axis center of the upper air direction plate is perpendicular to the rotation axis. A line segment connecting the downstream end of the upper wind direction plate farthest from the rotation axis center in the plane is used as a reference line, and the reference line is located at the highest point of the upper wind direction plate where the height from the reference line is maximum. The pasting angle is in the range of 114 to 156 degrees.

  In general, a wall-mounted air conditioner is required to direct the wind direction as low as possible at the start of heating operation. Therefore, an air outlet is arranged at the lower front of the air conditioner, and the blower blows out with low noise. A cross-flow fan that can obtain a substantially uniform wind speed in the direction of the rotation axis is often used in order to send the wind in a uniform flow to a distance in the air-conditioned space.

  In this case, the blowing air passage 280 formed by the front casing 280a of the air conditioner is necessarily provided obliquely downward, and the inclination angle of the front casing 280a continuing from the nose constituting the blowing air passage 280 is from the viewpoint of heating. If considered, it is better to make it downward at a steep angle, but taking into account that a slightly upward wind direction is also necessary during cooling, it is often inclined around 20 degrees with respect to the horizontal, and empirically, 15 An angle in the range of 25 to 25 degrees is used.

  Correspondingly, the outlet is provided in a portion from the bottom surface of the air conditioner to the front surface, and the inclination of the outlet surface is 15 ° so that the air direction from the lower outlet during heating to the upper outlet during cooling is possible. In many cases, the angle is about 20 degrees to about 20 degrees, and an empirical range of 10 degrees to 25 degrees is used.

  In recent years, it has been equipped with human sensors, etc., and it has begun to control air conditioners based on the obtained indoor information, but these sensors can obtain the maximum information of indoor living space. This position is desirable and is often provided at the lower front of the air conditioner, and the angle at which the sensor is directed must be determined in consideration of the detectable angle range of the sensor.

  In this case, the sensor needs to be able to acquire information on people near the wall opposite to the wall where the air conditioner is installed and people near the air conditioner. In response, methods such as increasing the number of sensors are employed. At this time, when the direction of the sensor (the direction in which the sensitivity is maximum) is viewed from the side of the air conditioner, the angle that the sensor direction makes with the floor surface is often around 40 degrees. Values from 30 degrees to 50 degrees are used.

  In the air conditioner of the embodiment, when the operation of the air conditioner is stopped, the upper wind direction plate and the lower wind direction plate are stopped after being directed to the uppermost position, so that the shielding starts from the rotation axis of the air outlet and the upper wind direction plate. A human sensor mounted on the air conditioner to detect the state of the indoor living space as well as to conceal the wind surface 291e with the lower wind direction plate and make the appearance of the indoor unit a smooth shape with less unevenness. By hiding the screen with the upper wind direction plate, the feeling of resistance to what is seen is wiped out and the calm atmosphere in the room is not disturbed.

  In this case, the human sensor can be hidden by the wind direction surface 291d of the upper wind direction plate that is substantially perpendicular to the direction of the human sensor, and a useless space can be saved. Also, the direction of the human sensor can be in the range of 30 to 50 degrees from the floor, the inclination angle of the front casing can be in the range of 15 to 25 degrees, and the inclination of the blowout surface can be in the range of 10 to 25 degrees. Therefore, it is possible to realize an arrangement of an appropriate air blowing path 280, an air outlet surface (virtual surface at the air outlet opening end), and a human sensor.

  In addition, if the angle pasted by the reference line at a position of the maximum height of the wind direction surface 291d from the reference line is less than 114 degrees, the information of the person who is close to the air conditioner is sufficiently located in the direction of the human sensor. When the upper wind direction plate is closed and stowed when the operation is stopped, the distance from the lower wind direction plate becomes too large and wasteful. Space, and the use efficiency of the space decreases.

  In addition, when trying to eliminate the useless space, the inclination of the blowing surface (the virtual surface at the opening end of the air blowing port) becomes small, and it becomes difficult to deliver the cold air over a wide area in the room with a slightly upward air direction during cooling. This is because the position of the upper wind direction plate during normal cooling is too close to the storage position of the upper wind direction plate when operation is stopped, and it becomes impossible to adjust the wind direction during cooling operation, for example, it is not possible to adjust the direction of the wind that sends cool blown air far away indoors. There is a strong risk that it will be difficult to control the wind direction slightly upward.

  Also, when the air flow surface 291d of the upper wind direction plate and the lower wind direction plate are substantially parallel, the flow of the blown air changes from the compressed flow to the parallel flow when the blown air is compressed and accelerated and sent to far away in the room. Since the direction of flow changes at the part where the air flows, if the direction change of this part is large (the angle at which it is applied is small), vortices are likely to occur, and noise and air volume decrease. It becomes difficult to do.

  In order to solve these problems, an extra space is required around the upper wind direction plate and the human sensor mounting part, and the use efficiency of the space decreases, leading to an increase in volume, contrary to resource savings, distribution costs, etc. It leads to up.

  On the other hand, if the pasting angle exceeds 156 degrees, the direction of the human sensor is too downward and there is a strong possibility that information on a person who is far from the air conditioner cannot be acquired sufficiently. When the upper wind direction plate is closed and stored when the operation is stopped, the lower wind direction plate is too close to the lower wind direction plate. It becomes difficult to make the appearance on the upper wind direction plate smooth and continuous, and the appearance is impaired.

  In addition, if the appearance is made to continue smoothly, the inclination of the blowout surface (virtual surface at the opening end of the air blowout port) becomes large, making it difficult to make the wind direction downward sufficiently at the start of heating operation. The angle from the position of the upper wind direction plate during operation of the machine to the position where it is stored becomes larger, and it is necessary to take a wide area that does not interfere with the upper wind direction plate, so that the space utilization efficiency decreases. Furthermore, since the upper wind direction plate approaches the flat plate, the rigidity decreases, the deformation when the upper wind direction plate is held almost horizontally increases, the feeling of luxury is lost, the product image is down, and the quality of the appearance is degraded. To do.

  In order to solve these problems, as in the case where the angle at which the reference line is pasted is too small, an extra space is required around the upper wind direction plate and the human sensor mounting portion, and the use efficiency of the space is reduced. Will lead to an increase in distribution costs, contrary to resource savings.

  For this reason, the air outlet has an appropriate structure around the air outlet, and the exterior of the indoor unit has a smooth shape with little unevenness when stopped, and the human sensor is hidden by the upper wind direction plate so as not to disturb the calm atmosphere in the room. Machine can be provided.

  Further, in the air conditioner of the embodiment, the length of the line connecting the rotation axis center and the highest point, which is the length of the wind shielding surface 291e, is the length of the blowing air passage in the plane perpendicular to the rotation axis. 40 to 60% of the height.

  As a result, the upper wind direction plate is rotated downward as much as possible during the heating operation, nearly half of the blown air blown in the tilt direction of the front casing is blocked by the wind blocking surface 291e, and turned downward to wind the wind blocking surface 291e. Subsequently, the blown air can be contracted by the wind direction surface 291d and the lower wind direction plate, and the speed can be increased and sent downward.

  In this case, if the length of the wind shielding surface 291e is less than 40% of the height of the blowing air passage, the blown air is not sufficiently turned downward, and the wind direction surface 291d following the wind shielding surface 291e and the lower side Shrinkage and speed increase due to the wind direction plate are also insufficient, and effective heating at the start of heating operation becomes difficult.

  On the other hand, when the length of the wind shielding surface 291e exceeds 60% of the height of the blowout air passage, the blown air is turned downward without any trouble, but the wind direction surface 291d and the lower wind direction plate to be subsequently performed are performed. The contracted flow due to the pressure becomes excessive, the amount of blown air decreases, and the risk that the blown air will not reach the floor surface increases.

  For this reason, the blown air reaches the floor surface at the start of the heating operation, and an air conditioner that exhibits an excellent heating effect can be provided.

  Further, in the air conditioner of the embodiment, the rotation angle of the upper wind direction plate from the rotation position of the upper wind direction plate during the cooling maximum capacity operation to the closed state of the upper wind direction plate at the time of stop is 18 It is 51 degrees.

  Thus, similarly to the air conditioner of claim 1, when the operation of the air conditioner is stopped, the upper wind direction plate and the lower wind direction plate are stopped after being directed upward, so that the air outlet port and the upper wind direction plate An air conditioner is provided to conceal the wind-shielding surface 291e starting from the rotating shaft with the lower wind direction plate so that the appearance of the indoor unit can be made smooth with little unevenness and to detect the state of the indoor living space. By hiding the human sensor mounted on the upper wind direction plate, the feeling of resistance to what is seen is wiped out and the calm atmosphere in the room is not disturbed.

  Also in this case, similarly to the air conditioner of the second aspect, it is possible to realize an appropriate air blowing path, air blowing surface (virtual surface at the air outlet opening end), and human sensor arrangement.

  If the rotation angle exceeds 51 degrees, the angle from the position of the upper wind direction plate during operation of the air conditioner to the position where it is stored becomes larger, and a wide area that does not interfere with the upper wind direction plate is taken. When necessary, the space utilization efficiency is reduced, and when the upper wind direction plate is closed and stored when the operation is stopped, the distance from the lower wind direction plate is too close to the upper side of the air conditioner. It becomes difficult to make the appearance on the wind direction plate smoothly continuous, and the appearance is impaired. Furthermore, if the external appearance is to be made smoothly continuous, the inclination of the blowing surface (the virtual surface at the air blowing port opening end) becomes large, and it becomes difficult to make the wind direction sufficiently downward at the start of heating operation.

  Further, during the cooling maximum capacity operation, the compressor is operated at the maximum cooling speed, and the resistance of the wind direction plate is minimized so as to maximize the blown air volume. This state can be realized by blowing the blown air that has come out of the blown air passage in the same direction without any restrictions. For this reason, the position and rotation angle of the rotation axis of the upper wind direction plate are selected so that the wind shielding surface 291e of the upper wind direction plate is positioned on the extension of the inclination angle of the front casing.

  On the other hand, the inclination angle (sensor surface angle) of the sensor surface equipped with sensors such as human sensors for obtaining indoor information with respect to the floor surface as viewed from the side of the air conditioner is the sensor direction (the sensitivity of the sensor is the maximum). Is the complement of the angle with the floor surface as viewed from the side of the air conditioner, and as described above, the angle from 40 degrees to 60 degrees (the direction of the sensor as viewed from the side of the air conditioner) 30 degrees to 50 degrees).

  When the operation is stopped, the sensor surface is covered with the wind direction surface 291d of the upper wind direction plate, so that the room can have a calm atmosphere. If the rotation angle of the upper wind direction plate from this state to the state at the time of maximum capacity operation is set excessively, the inclination angle of the wind shielding surface 291e is increased, and the inclination angle of the front casing is necessarily increased. As a result, the direction of the blown-out air becomes more downward, making it difficult to use the room in a wide range by slightly upward during cooling.

  Further, when the wind-shielding surface 291e is excessively deviated from the shaft angle base line, the rotation angle becomes large, but in this case, a large space between the rotation shaft and the front casing has to be taken, which increases useless space. . Furthermore, if the tilt angle and the sensor surface angle of the front casing are maintained and the rotation angle is excessively increased, the angle at which the reference line is pasted at the highest point of the upper wind direction plate described above increases, and the upper wind direction plate is flat. The rigidity decreases, the deformation when the upper wind direction plate is held substantially horizontal increases, the feeling of luxury is lost, the image of the product is reduced, and the quality of the appearance is deteriorated.

  On the other hand, if the rotation angle is less than 18 degrees, the position of the upper wind direction plate during normal cooling and the storage position of the upper wind direction plate during operation stop are too close, and cool air is sent far away in the room during cooling operation. There is a strong risk that it will be difficult to control the air direction slightly upward during cooling, for example, it becomes impossible to adjust the air direction.

  Also, when the upper wind direction plate is closed and stowed when the operation is stopped, the distance from the lower wind direction plate becomes too large, resulting in wasted space, reducing the use efficiency of the space, and trying to eliminate the wasted space. The inclination of the surface (the virtual surface at the opening end of the air outlet opening) becomes small, and it becomes difficult to deliver the cold air over a wide area in the room with a slightly upward air direction during cooling.

  Further, when the rotation angle of the upper wind direction plate from the state where the sensor surface is covered with the wind direction surface 291d of the upper wind direction plate at the time of operation stop to the state during the maximum capacity operation of the cooling is set to be too small, the wind shielding surface 291e The inclination angle is reduced, and the inclination angle of the front casing is inevitably reduced, and the direction of the blown air becomes more upward, making it difficult to deliver the blown air downward to the floor during heating. .

  Further, when the wind-shielding surface 291e is too close to the shaft angle base line, the rotation angle becomes small. In this case, however, the size of the rotation shaft must be reduced, and the rotation shaft is made sufficiently strong. This makes it difficult to operate the upper wind direction plate smoothly. In the worst case, it may be damaged, and the reliability of the air conditioner is greatly reduced.

  Also, when the air flow surface 291d of the upper wind direction plate and the lower wind direction plate are substantially parallel, the flow of the blown air changes from the compressed flow to the parallel flow when the blown air is compressed and accelerated and sent to far away in the room. Since the direction of flow changes at the part where the air flows, if the direction change of this part is large (the angle at which it is applied is small), vortices are likely to occur, and noise and air volume decrease. It becomes difficult to do.

  For this reason, the air outlet has an appropriate structure around the air outlet, and the exterior of the indoor unit has a smooth shape with little unevenness when stopped, and the human sensor is hidden by the upper wind direction plate so as not to disturb the calm atmosphere in the room. Machine can be provided.

  Moreover, the air conditioner of an Example provides the said gap | interval formation part in one place.

  Thereby, the amount of leaked air at the time of cooling and heating is managed to an appropriate amount by adjusting the gap at the gap forming portion. Specifically, when the upper airflow direction plate is in the cooling operation position, an appropriate amount of leaked air should be leaked to the blowout air passage side, and at the start of heating operation where the blown air should be sent as low as possible (room temperature is low, When it is desired to rapidly raise the temperature near the floor), the wind shielding surface 291e is applied to the connecting portion between the groove and the front casing.

  As a result, the blown air is prevented from flowing into the gap between the shaft side gap forming part and the cover side gap forming part and the groove part, and is blocked by the wind shielding surface 291e. Warm up effectively.

  For this reason, it is possible to provide an air conditioner that can appropriately control the amount of leakage both at the time of cooling and at the start of heating, suppress condensation, and effectively heat the floor surface at the start of heating.

  Next, the rotation axis of the upper wind direction plate of the air conditioner of Example 2 will be described with reference to FIGS. 13 and 14. FIG. 13 is a cross-sectional view of the air outlet of the indoor unit of the air conditioner according to the second embodiment. FIG. 14 is an enlarged view of the rotating portion of the upper wind direction plate during the cooling / air blowing operation of the indoor unit.

  In the air conditioner of the second embodiment, the rotating shaft 29a of the upper wind direction plate 29 is circular as shown in FIG. 13, and the other portions are the same as those of the first embodiment. By making the rotary shaft 29a circular in this way, the passage through which the blown air leaks between the rotary shaft 29a of the upper wind direction plate 29 and the groove portion 24c of the lower panel 24 has a width Gp. Is a length along the cylindrical inner surface of the groove, and the length Lp of the passage is increased. In this way, the gap Lp is left as it is, and the length Lp of the passage is increased, so that the resistance to the blown-out air that leaks increases, and the amount of the blown-out air that leaks decreases.

  During the air blowing operation, the upper wind direction plate 29 is rotated as shown in FIG. 14, the length of the passage is Lp, which is considerably larger than that in the first embodiment, and the amount of the blown-out air leaking is small. During the cooling operation, the upper wind direction plate 29 is rotated at the same angle as in FIG. 7B, but since the rotation shaft 29a is circular, the length of the passage is determined by the shape of the groove 24c. It becomes the same as the length Lp of the passage at the time of the air blowing operation, is constant regardless of the rotational position of the rotational shaft, and the amount of the blown-out air that leaks is also constant, so that a stable and small amount can be obtained.

  Thus, the air conditioner of an Example forms the outer surface of the hollow-shaped part of the said rotating shaft in a column shape.

  As a result, the length of the gap passage between the casing portion and the groove portion that becomes the passage when the blown air leaks from the rotating shaft portion is substantially increased to the circumferential length of the groove portion, and passes through the gap. The air resistance increases and the amount of blown air that leaks decreases.

  Moreover, since the appearance of the rotating shaft portion is a smooth surface with a uniform curvature, visual noise can be reduced.

  Moreover, the area of a hollow part becomes large with respect to the same semicircle-shaped groove part, and the intensity | strength and rigidity of a transmission member can be raised. On the contrary, since the outer diameter of the rotating shaft can be reduced with respect to the required strength and rigidity of the transmission member, the mass of this portion can be reduced and the wind direction plate can be reduced in weight.

  For this reason, the air conditioner which suppresses a short circuit effectively can be provided.

  Moreover, the air conditioner of an Example is a concave shape in which the cross section perpendicular | vertical to the said rotating shaft of the said groove part makes a part of circle | round | yen.

  As a result, the passage through which the blown air leaks between the rotating shaft of the upper wind direction plate and the groove portion of the lower panel has a width of the gap and a length along the cylindrical inner surface of the groove. Lengthens. In this way, since the length of the passage is increased without changing the gap, the resistance to the air that leaks increases, and the amount of air that leaks decreases.

  During the air blowing operation, the upper wind direction plate is rotated, the length of the passage becomes considerably large, and the amount of the blown-out air leaking is small. During cooling operation, the upper wind direction plate has a circular rotation shaft, so the length of the passage is determined by the shape of the groove, so it is the same as the length of the passage during air blowing operation, and the rotation position of the rotation shaft Regardless of this, the amount of the blown-out air that leaks out is also constant, and the amount can be reduced stably.

  Therefore, it is possible to provide an air conditioner in which the amount of leaked air is quantified and the operation is stable regardless of the rotational position of the upper wind direction plate.

  Next, the structure of the upper wind direction plate will be described with reference to FIGS. FIG. 15 is a perspective view of the upper wind direction plate, and FIG. 15B is an exploded perspective view of the upper wind direction plate. FIG. 16 is a perspective view of the wind direction piece of the upper wind direction plate, and FIG. 16B is a perspective view of the wind direction piece of the upper wind direction plate seen from another angle. FIG. 17 is a detailed view of the rotating shaft portion of the wind direction piece of the upper wind direction plate, (a) is a plan view, (b) is a side view, (c) is a front sectional view, and (d) is a section AA.

  As shown in FIG. 15, the upper wind direction plate 29 has shaft covers 292 and 293 attached to the wind direction piece 291, and a transmission member 296 is inserted into a hollow portion formed on the rotating shaft 29 a by the wind direction piece 291 and the shaft cover 292. Assembled. The transmission member 296 is coupled to the drive motor 287 of the upper wind direction plate 29 when the upper wind direction plate 29 is attached to the housing 20, and transmits the driving force of the drive motor 287 to the upper wind direction plate 29. Move.

  As shown in FIGS. 16A and 16B, the wind direction piece 291 is formed with a wind direction surface 291d, a wind shielding surface 291e291e, and a rotation shaft portion 291a, and the central portion excluding both ends of the rotation shaft portion 291a is The outer surface is a semi-cylindrical shape, and the inner surface is a semi-cylindrical portion 291g formed in a concave surface so that the transmission member 296 can be accommodated. The outer surface of the semi-cylinder is combined with the outer surface of the shaft cover 292 so that the outer surface of the rotating shaft 29a is formed in a cylindrical shape except for the connection portion with the wind shielding surface 291e291e.

  Thus, in this embodiment, since the outer surface of the rotating shaft 29a is cylindrical, the gap between the lower panel 24 and the groove 24c is the same gap everywhere on the cylinder, and therefore the entire outer surface of the cylinder of the wind direction piece 291 is As shown in FIG. 17D, the shaft side gap forming portion 291b is formed, and similarly, the entire outer surface of the cylinder of the right shaft cover 292 becomes the cover side gap forming portion 292b.

  Next, the configuration around the outlet will be described in detail with reference to FIGS. FIG. 18 is an explanatory view of the arrangement of room information sensors. FIG. 19 is an explanatory diagram of detection ranges of room information sensors. FIG. 20 is an explanatory view of the angle of the upper wind direction plate related parts with respect to the horizontal plane, (b) is the sensor surface angle, (c) is the front casing angle, and (d) is the outlet surface storage angle.

  The air conditioner incorporates various types of sensors to capture indoor information and use it to control the air conditioner. In recent years, to save energy, whether there are people in the room or where it is in the room. The air conditioner is also being controlled by obtaining information such as the brightness of the room or the sound of the room. Since such a sensor must be installed at a location that accurately captures information in the room, it is reasonable to install it directly above the outlet on the lower front of the wall-mounted air conditioner, close to where the user will be. Suitable for

  FIG. 18 shows this state, and an infrared sensor 393, a sound sensor 392, and the like are provided at the lower front of the air conditioner. In this case, since these sensors are required to be installed toward a position where a person will be present, the direction of the sensors should be directed to the center of the room. As described above, the air conditioner can accurately obtain the indoor information by installing the sensor toward the indoor central portion where the user is likely to exist. At this time, an angle λ at which the direction of the sensor intersects the floor is referred to as the direction of the sensor.

  Large capacity air conditioners are installed in large rooms, and small capacity air conditioners are installed in narrow rooms. On the other hand, the installation height of the wall-mounted air conditioner has almost no change depending on the capacity of the air conditioner, and is in the range of 1.7 m to 2.0 m from the floor. This is determined by the height of the ceiling in the room, the height of the furniture to be placed, and the ease of maintenance, etc. In a room with a loft with a high ceiling height, it may be about 3.0 m. is there.

  For this reason, as shown in FIG. 19, the direction λ1 of a large-capacity air conditioner sensor for a large room is reduced, and the direction λ2 of a small-capacity air conditioner sensor for a narrow room is increased. The direction λ of the sensor is often set in the range of 30 to 50 degrees empirically. The direction of the sensor is generally the direction where the sensitivity of the sensor is the most sensitive. Around this sensitive sensitivity, there is an area of practical sensitivity, and there is an area of uncertain sensitivity outside it. The outside becomes a dead area.

  FIG. 19 shows a practical sensitivity region of the sensor at angles μ1 and μ2. The area of the sensor's practical sensitivity range varies depending on the sensor type, price, manufacturer, etc., and it cannot be generally stated, but depending on the application, the area may be shared by multiple sensors. ing. At this time, the sensor is generally mounted perpendicularly to the mounting substrate 390, and the angle γ (sensor surface angle) of the mounting substrate 390 is the remainder of the sensor direction λ, and the relationship of γ = 90−λ Become. Therefore, the angle range of the mounting substrate 390 is 40 degrees to 60 degrees.

  Around the outlet, there are components such as a front casing 280a, an upper wind direction plate 29, a lower wind direction plate 29 'sensor mounting substrate 390, etc. that influence the function and performance of the air conditioner. In the embodiment, as shown in FIG. Has been placed. HL in FIG. 20 is a horizontal line, and the inclination γ (sensor surface angle) of the sensor mounting substrate 390 is the same as the remainder angle γ of the sensor direction λ in FIG. The wind direction surface 291d of the upper wind direction plate 29 serves to hide the sensors when the air direction plate is closed when the air conditioner is stopped.

  A line segment connecting the axis of the rotation axis 29a of the upper wind direction plate 29 and the tip of the wind direction surface 291d is defined as a reference line BL, and the length of the reference line BL is defined as L. A point connecting the tip of the wind direction surface 291d and the point P represents the direction of the wind direction surface 291d, where P is the point where the height of the wind direction surface 291d and the wind shielding surface 291e of the upper wind direction plate 29 is the largest from the reference line BL. Since this is a straight line, this is called the wind direction representative straight line DL.

  As shown in FIG. 20 (a), with the upper wind direction plate 29 closed when the operation of the air conditioner is closed, the highest point P from the reference line BL of the upper wind direction plate 29 is connected to the axis of the rotary shaft 29a. The line segment is referred to as an axial angle base line JL, and the length of the axial angle base line JL is Sn. Since the length Sn of the shaft angle base line JL is substantially equal to the length of the wind shield surface 291e, it may be called the wind shield surface length Sn.

In this case, as shown in FIG. 20B, when the upper wind direction plate 29 is closed when the air conditioner is stopped, the inclination ι (wind direction storage angle) of the wind direction surface 291d is changed to the inclination γ (sensor surface angle) of the sensor mounting substrate 390. It is possible to hide the sensors with the smallest area. The front casing 280a is configured so that α (referred to as the front casing angle in FIG. 20C) in FIG. From experience, the range of 15 degrees to 25 degrees is also performed.

  Further, the lower wind direction plate 29 'closes the air outlet 28 when the air conditioner is stopped to form the outer shape of the air conditioner, and the inclination β at that time (air outlet surface storage angle: see FIG. 20 (d)) is the air outlet 28. As with the front casing angle α, the inclination of the air outlet 28 is also empirically so that the air outlet direction can be adjusted from slightly upward during cooling operation to as downward as possible during heating operation. The range of 10 degrees to 25 degrees is performed.

  Next, the positional relationship between the upper wind direction plate and the lower wind direction plate when the operation of the air conditioner is stopped will be described with reference to FIG. FIG. 21 is an explanatory diagram of the angle of the upper wind direction plate related parts with respect to the axis angle reference line, (b) is the wind direction surface-axis angle, (c) is the wind shield surface-axis angle, and (d) is the blowout surface-axis storage angle. is there.

  In FIG. 21, what is indicated by EJL is an extension of the axis angle base line JL described above, and is slightly inclined with respect to the horizontal line HL. As shown in FIG. 21B, when the angle formed by the extension line EJL of the axial angle base line and the wind direction surface representative straight line FD is ζ (wind direction surface−axis angle = formation angle), the formation angle ζ is the upper wind direction plate 29. Is the complementary angle of the angle ν pasted by the reference line BL with respect to the highest point P from the reference line BL, and has a relationship of ζ = 180−ν.

  Since the tangent drawn from the point P to the outer shape of the rotating shaft 29a is a straight line substantially along the wind shield surface 291e, this is referred to as a wind shield surface representative straight line FO (see FIG. 21C). An angle δ (wind shielding surface-axis angle) formed by the wind shielding surface representative straight line FO and the shaft angle base line JL is determined by the upper wind direction plate 29 according to the strength of the material of the wind direction piece 291 constituting the upper wind direction plate 29. Depending on the outer diameter of the rotation shaft 29a determined from the force to be rotated, the allowable amount of bending, and the thickness of the wind direction plate, it is necessary to reduce the strength of the material if the strength is high, and increase it for a weak material.

  Further, as shown in FIG. 21 (d), when the angle formed by the shaft angle base line JL and the lower wind direction plate 29 ′ when the operation of the air conditioner is stopped is ε (blowing surface-shaft storage angle), the lower wind direction plate 29 In order to smoothly connect the outer shape when the air conditioner is stopped from ′ to the upper wind direction plate 29, ε needs to be larger than δ. Otherwise, the rotating shaft 29 a contacts the lower wind direction plate 29 ′, and the lower wind direction plate 29 ′ cannot be rotated to a predetermined position, so that there is a gap between the lower wind direction plate 29 ′ and the upper wind direction plate 29. And may damage the appearance at the time of stoppage.

  Next, the position of the wind direction plate and the flow of the blown air at that time will be described with reference to FIGS. FIG. 22 shows the wind flow around the outlet during cooling. FIG. 23 shows the flow of wind around the outlet at the start of heating operation. FIG. 24 shows the flow of air around the air outlet during cooling and blowing, (a) is slightly upward cooling, and (b) is blowing. FIG. 25 shows the flow of wind around the outlet during heating, (a) is during weak heating, and (b) is during normal heating.

  As shown in FIG. 22, an angle formed by the extension line ECL of the front casing and the wind shield surface representative straight line SL is defined as a front casing-wind shield surface angle κ. When the full capacity is to be exhibited by cooling as in the case of the maximum cooling capacity operation, the resistance of the blowing air passage 280 is also minimized and the amount of the blowing air is maximized as shown in FIG. The wind shielding surface 291e of the plate 29 is made substantially equal to the inclination of the front casing 280a.

  In this way, by making the wind-shielding surface 291e of the upper wind direction plate 29 substantially equal to the inclination of the front casing 280a, the blown air flowing through the blow-out air passage 280 is blown from the air conditioner while maintaining the speed and direction substantially unchanged. put out. In other words, the upper airflow direction plate 29 is moved upward from the surface forming the extended surface of the upper surface of the blowout air passage 280 in the air blowing state in the vicinity of the horizontal direction and the downstream end of the airflow of the surface forming the extended surface. A surface formed so as to be bent in a square shape, and in the air blowing state in the vicinity of the horizontal direction, the surface up to the portion bent in the shape of a square and the downstream side of the airflow of the lower wind direction plate By forming the flow path between the surface up to the end portion, the blown air flowing through the blown air passage 280 can be blown out from the air conditioner while maintaining the speed and direction as it is.

  At this time, the wind shielding surface 291e is positioned outside the blowing air passage 280 or receives the blowing air at a shallow angle, that is, an angle at which the front casing-wind shielding surface angle κ is small.

  As a result, the indoor air in the vicinity of the upper surface of the upper wind direction plate 29 leaks to the outlet 28 through the gap between the rotating shaft 29a and the groove 24c. The leaked room air flows between the blown air and the upper wind direction plate 29, thereby preventing the cold blown air from directly touching the upper wind direction plate 29. For this reason, the temperature of the upper wind direction plate 29 does not drop so much, and condensation occurring on the upper wind direction plate 29 can be suppressed.

  At the start of the heating operation, as shown in FIG. 23, the wind shielding surface 291e of the upper wind direction plate 29 is brought into contact with the end of the front casing 280a. By doing so, the blown air blown out from the blowout air passage 280 is blocked by the wind-shielding surface 291e, and almost all of the direction changes downward, and is guided by the wind direction surface 291d and the lower side wind direction plate 29 'so as to be close to the floor surface. To reach. As described above, at the start of the heating operation, the blown air efficiently reaches the floor surface, and the room is quickly warmed. In other words, a surface (wind-shielding surface 291e) forming an extended surface of the upper surface of the blowing air passage 280 (the upper surface of the blowing air passage 280 formed by the front casing 280a) in the downward blowing state, and an end portion of this surface A flow path is formed between a surface (wind direction surface 291d) formed so as to be bent in a frame shape and a surface to the downstream end of the airflow of the lower wind direction plate.

  In the case of performing slightly upward cooling, as shown in FIG. 24 (a), the upper wind direction plate 29 is set to the upper side than during the full capacity operation of the cooling, and the lower wind direction plate 29 'is substantially horizontal. At this time, since the wind-shielding surface 291e is out of the inclination of the front casing 280a, the upper wind direction is drawn through the gap between the rotating shaft 29a and the groove portion 24c by being attracted by the blown air, as in the case of the full capacity operation of the cooling. The room air near the upper surface of the plate 29 leaks into the outlet 28, and the upper wind direction plate 29 is prevented from being cooled and dew condensation is suppressed.

  When performing normal cooling / air blowing, as shown in FIG. 24 (b), the upper wind direction plate 29 is positioned below the full capacity operation of the cooling, and the lower wind direction plate 29 ′ is the wind direction surface of the upper wind direction plate 29. Almost parallel to 291d. At this time, the wind shield surface 291e receives the blown air at a shallow angle κ (front casing-wind shield surface angle). As a result, the indoor air near the upper surface of the upper wind direction plate 29 is attracted by the blown air and passes through the gap between the rotating shaft 29a and the groove 24c, and leaks into the blowout port 28, and the upper wind direction plate 29 is cooled. Suppresses condensation.

  In the case of performing air blowing and weak heating, as shown in FIG. 25A, the upper wind direction plate 29 is positioned below the normal cooling / air blowing operation, and the lower wind direction plate 29 ′ is the wind direction surface of the upper wind direction plate 29. Almost parallel to 291d. At this time, the wind shielding surface 291e receives the blown air at a deeper angle κ (front casing-wind shielding surface angle) than before. As a result, the air that is attracted by the blown air and the air that is about to leak out from the gap formed when the blown air collides with the wind-shielding surface 291e antagonize, and the air flowing through the gap becomes almost zero. At this time, the upper wind direction plate 29 is in direct contact with the blown air, but since it is in the air blowing / heating operation, the temperature of the blown air is equal to or higher than the room temperature, the upper wind direction plate 29 is not cooled, and there is a risk of condensation. Absent.

  When performing normal heating, as shown in FIG. 25 (b), the upper wind direction plate 29 is positioned lower than that during the air blowing / weak heating operation, and the lower wind direction plate 29 ′ is connected to the wind direction surface 291 d of the upper wind direction plate 29. Make almost parallel. At this time, the wind shield surface 291e receives the blown air at a deep angle κ (front casing-wind shield surface angle). Thereby, blowing air collides with the wind-shielding surface 291e, and a part of blowing air leaks from a clearance gap. At this time, the upper wind direction plate 29 directly touches the blown air, but since it is normally in the heating operation, the temperature of the blown air is higher than the room temperature, the upper wind direction plate 29 is not cooled, and there is no fear of condensation.

  Since the operation state at this time is usually the heating operation, even if a part of the blown air leaks out, there is a margin in the heating capacity, and there is no fear that the heating operation will be hindered. The part of the air that has leaked rises and is sucked into the suction port. By adjusting the clearance between the rotating shaft 29a and the groove 24c, the amount of the air that is not disturbed by the heating operation is reduced. Can also be suppressed.

  Next, the upper wind direction plate of the air conditioner of Example 3 will be described with reference to FIGS. FIG. 26 is a cross-sectional view of the air outlet of the indoor unit of the air conditioner according to the third embodiment. FIG. 27 is an enlarged view of the rotating portion of the upper wind direction plate during the cooling operation of the indoor unit. FIG. 28 is an enlarged view of the rotating portion of the upper wind direction plate in the other operation state of the indoor unit, (a) when stopped, (b) mainly during cooling / air blowing operation, and (c) mainly air blowing. It is during driving. FIG. 29 is an enlarged view of the rotating portion of the upper wind direction plate in the other operation state of the indoor unit, (a) is mainly during the air blowing / weak heating operation, and (b) is mainly during the strong heating operation.

  In the air conditioner of the third embodiment, the room air entering the blowing air passage during the cooling operation is increased. For this reason, in the air conditioner of the third embodiment, the cross-sectional shape of the groove portion 24c of the air conditioner of the second embodiment is changed from a semicircular shape to a semi-elliptical shape having a larger diameter, and the semicircular shape is obtained. The heat insulating sheet 24p is pasted in the gap that has become larger between the groove portions 24c, and the other portions are the same as those in the second embodiment.

  In the air conditioner of the second embodiment, during the cooling operation, the air is sucked by the flow of the blown air as in FIG. 7B, and the shaft side gap forming portion 291b of the rotating shaft 29a of the upper wind direction plate 29 and the cover side gap are formed. A small amount of room air flows into the blowout air passage 280 as shown by a small arrow through the gap formed by the portion 292b and the groove portion 24c.

  Further, during the heating operation, a small amount of blown air leaks out of the blowout air passage 280 as shown by a small arrow, as in FIG. Accordingly, as described above, it is possible to effectively blow the blown-out hot air downward by reducing the amount of air flowing through the gap during the heating operation. In addition, as described above, condensation occurs on the upper surface of the wind-shielding surface 291e during the cooling operation when the humidity in the room is high, and the condensation is suppressed by attaching a heat insulating material to the upper surface of the wind-shielding surface 291e.

  In the air conditioner according to the third embodiment, the structure can suppress the dew condensation on the upper surface of the wind-shielding surface 291e even in the cooling operation when the indoor humidity is high and the blown warm air can be effectively blown downward during the heating operation. Propose. As shown in FIG. 26, by increasing the gap between the rotating shaft 29a and the groove 24c, during the cooling operation, the room air on the upper surface of the upper wind direction plate 29 is removed from this gap as shown in FIG. It flows more than the case of 2.

  In this way, during the cooling operation, a large amount of room air is blown out through the gaps between the shaft side gap forming portion 291b and the cover side gap forming portion 292b and the groove portion 24c, as shown by the small arrows in FIG. Into 280. The indoor air on the upper surface of the upper wind direction plate 29 that has flown in covers the wind shielding surface 291e and the wind direction surface 291d of the upper wind direction plate 29, so that the cold blown air indicated by a large arrow is not directly touched. The temperature rises and condensation decreases.

  For this reason, the cross-sectional shape of the groove 24c is made into a semi-oval shape so that the rotating shaft 29a can be surely retracted from the cold blown air that goes straight, and the position of the rotating shaft 29a is kept away from the front casing 280a. At this time, a wider gap is formed between the rotating shaft 29a and the groove 24c on the front casing 280a side, and a heat insulating sheet 24p is pasted in this gap as will be described below.

  This is because the groove 24c in the portion near the front casing 280a that is in direct contact with the cold blown air is cooled to a low temperature, and therefore from the gap between the shaft side gap forming portion 291b and the cover side gap forming portion 292b and the groove 24c. When the indoor air moisture on the upper surface of the upper wind direction plate 29 that has flowed in is condensed and the moisture in the room is high, the condensed moisture may drop. To prevent this, the groove portion 24c having a semi-oval cross section is used. This is because a heat insulating sheet 24p is attached to a portion close to the front casing 280a so that condensation is suppressed.

  In this way, the rotating shaft 29a and the wind shielding surface 291e are outside the extension line of the front casing 280a at the rotating position of the upper wind direction plate 29 during the cooling and cooling / air-blowing operation as shown in FIGS. 27 and 28B. (The upper side in FIGS. 27 and 28). As shown in FIG. 27 and FIG. 28 (b), when the wind shield surface 291e and the extension line of the front casing 280a do not intersect or at a shallow angle, the shaft side gap forming portion 291b, the cover side gap forming portion 292b, The room air above the upper wind direction plate 29 is sucked from the gap between the grooves 24c.

  Thus, as described above, the air flows between the blown air and the wind shielding surface 291e, and acts to prevent the blown air from directly touching the wind shielding surface 291e. Further, as shown in FIG. 29 (a), when the air crosses at a deep angle, the blown air passes from the gap between the shaft side gap forming portion 291b, the cover side gap forming portion 292b, and the groove portion 24c to the upper side of the upper wind direction plate 29. Go through.

  When intersecting at an intermediate angle between them, as shown by a small arrow in FIG. 28 (c), the blowout air that tries to exit the gap between the shaft side gap forming part 291b, the cover side gap forming part 292b and the groove part 24c. The indoor air that is going to enter will antagonize, and there will be almost no entry and exit. In addition, when the wind-shielding surface 291e is brought into contact with the front casing 280a as shown in FIG. 29B, the blown air comes from the gaps between the shaft-side gap forming part 291b and the cover-side gap forming part 292b and the groove part 24c. Without leaking, it blows out directly under the air conditioner to effectively warm the floor.

  The relationship between the cooling and heating operation state and the rotation angle of the upper wind direction plate 29 is that during the cooling operation, the cold blown air tends to stay naturally in the lower space of the room, so the wind direction of the blown air is directed upward. Is good. However, if the wind direction is excessively directed upward, a short circuit phenomenon occurs in which the air blown from the air outlet is immediately sucked from the air inlet, and the room cannot be effectively cooled.

  In order to prevent this, when strong cooling is required, the upper wind direction plate 29 and the lower wind direction plate 29 'are rotated so as to minimize the ventilation resistance of the blowout air passage 280 as shown in FIG. The blown air is blown out substantially in parallel with the front casing 280a, and further, the rotation speed of the blower fan 311 is increased, the blower air is operated to a strong wind, and the blown air is sent to a far away room, and the cold blown air is close to the air conditioner. Do not stay in

  At this time, since it is operating with strong wind, the force of sucking room air from the air suction ports 27, 27 'is strong, but the wind direction is obliquely downward substantially parallel to the front casing 280a, so that a short circuit does not occur. . In other words, it can be said that the installation angle of the front casing is set in accordance with an obliquely downward angle that does not cause a short circuit during the strong wind cooling operation and the blown air reaches far away indoors.

  When performing gentle cooling, the refrigeration capacity of the refrigeration cycle is lowered and the air volume is reduced to perform quiet operation. At this time, the force of sucking indoor air from the air inlets 27, 27 'is weak, and even if the wind direction is further upward, short circuit is less likely to occur, and the cold air blows down by natural convection when the wind direction is upward. The range to do is distributed and the comfortable range in the room can be expanded.

  On the other hand, if the wind direction is too low during cooling operation, the cold blown air reaches the floor surface and spreads across the floor. The feeling of comfort is spoiled. In addition, there is a need to keep the wind direction downward and concentrate cold air near the face, such as when going home from outside, but even in such a case, a comfortable feeling can be obtained for several minutes. Soon, the feeling of comfort will fade, so there is little need to maintain the wind direction downward for a long time during cooling operation.

  For this reason, the rotation range of the upper wind direction plate 29 during the cooling operation is centered on the position of FIG. 7B, and the upper range and the lower side are up to the position during the cooling / air blowing operation of FIG. It is enough to consider. At this time, the upper wind direction plate 29 generally does not intersect the extended line of the wind shielding surface 291e and the front casing 280a or intersect at a shallow angle.

  Therefore, the blown air flows as shown by the large arrows in FIGS. 27 and 28 (b), passes through the gaps between the shaft side gap forming part 291b, the cover side gap forming part 292b, and the groove part 24c, and the upper wind direction plate 29. Since the indoor air on the upper surface of the air flows between the blown air and the wind shielding surface 291e as indicated by a small arrow, the wind shielding surface 291e does not directly contact the cold blown air, and a heat insulating sheet is pasted on the upper wind direction plate 29. Even if it is not, the temperature of the upper surface of the upper wind direction plate 29 is not lowered, the condensation on the upper surface is small, and even when the indoor humidity is high, there is little possibility of polluting the room with condensed water droplets.

  As shown in FIG. 29 (a), when the wind-shielding surface, 291e, and the extension line of the front casing 280a intersect at a deep angle, the blown air flows between the shaft side gap forming portion 291b, the cover side gap forming portion 292b, and the groove portion 24c. When passing through the gap between the upper wind direction plate 29 and intersecting at an intermediate angle that is neither deep nor shallow, as shown by a small arrow in FIG. 28C, the shaft-side gap forming portion 291b, the cover As described above, the blowout air that tries to exit the gap between the side gap forming portion 292b and the groove portion 24c and the indoor air that tries to enter enter into a state of being incompatible with each other.

  The upper wind direction plate 29 is operated in such a rotational position during a time other than the cooling operation, such as a heating operation or an air cleaning operation, and the blown air directly touches the wind shielding surface 291e. However, condensation does not occur unlike the cooling operation, and the operation can be performed without any trouble. At the start of the heating operation where the blown air is to be sent downward as much as possible (when the room temperature is low and the temperature near the floor is to be raised rapidly), as shown in FIG. It applies to a connection part with the casing 280a.

  As a result, the blown air is prevented from flowing into the gaps between the shaft side gap forming part 291b, the cover side gap forming part 292b and the groove part 24c, and is blocked by the wind shielding surface 291e, so that all of the blown air is directed downward. , Effectively warm the floor. In this way, by devising the inclination of the wind shielding surface 291e and the front casing 280a, no condensation occurs in the upper wind direction plate 29 in any operation type such as cooling and heating. There is no need to attach a heat insulating sheet.

  As described above, when strong heating is desired, the windshield surface 291e is operated against the connecting portion between the groove 24c and the front casing 280a. However, in the case of other gentle heating, the air volume is reduced. Therefore, since the operation is quiet, as shown in FIG. 29A, the blown air leaks from the gaps between the shaft side gap forming part 291b, the cover side gap forming part 292b and the groove part 24c, and a small short circuit occurs.

  However, even if a small short circuit occurs, the air conditioner's ability to suck in indoor air is weak and does not hinder heating operation. Moreover, since it is not a case where the vicinity of the floor surface must be heated even if it is not correct, the heating operation is sufficiently adapted to the heating needs in this state.

  Thus, the air conditioner of an Example is the concave shape in which the cross section perpendicular | vertical to the said rotating shaft of the said groove part makes a part of ellipse.

  As a result, the position of the rotation shaft is moved away from the front casing so that the rotation shaft is surely retracted from the cold blown air that goes straight, and at this time, between the rotation shaft and the groove portion on the front casing side. A heat insulating sheet is stuck in a wider gap as possible to suppress condensation in this part. In this case, by increasing the gap between the rotating shaft and the groove portion, during the cooling operation, more room air on the upper surface of the upper wind direction plate flows from this gap.

  In this way, during the cooling operation, a lot of room air flows into the blowing air passage through the wide gap between the shaft side gap forming portion and the cover side gap forming portion and the groove portion. The indoor air on the upper surface of the upper wind direction plate that has flowed in covers the wind shielding surface and wind direction surface of the upper wind direction plate, so that the cold blown air indicated by the large arrow is not directly touched, and the temperature of the upper surface of the upper wind direction plate increases. , Condensation is reduced.

  For this reason, the cross-sectional shape of the groove portion is made into a semi-oval shape so that the rotating shaft is reliably retracted from the cold blown air that goes straight, and the position of the rotating shaft is kept away from the front casing. At this time, a wider gap is formed between the rotating shaft and the groove portion on the front casing side, and a heat insulating sheet is stuck in this gap as will be described next.

  This is because the groove near the front casing that is in direct contact with the cold blown air is cooled to a low temperature, so that the upper wind direction plate flows from the gap between the shaft side gap forming part and the cover side gap forming part and the groove part. In order to prevent moisture from falling when the moisture in the room air on the top surface of the top is condensed and the room humidity is high, heat insulation is provided at the part near the front casing of the groove part with a semi-oval cross section. This is because dew condensation is suppressed by sticking the adhesive sheet.

  For this reason, the dew condensation of the last flow part of a front side casing is suppressed, and the air conditioner with little possibility of polluting a room | chamber interior can be provided.

  Next, the upper wind direction plate of the air conditioner of Example 4 will be described with reference to FIGS. FIG. 30 is a cross-sectional view of the air outlet of the indoor unit of the air conditioner according to the fourth embodiment. FIG. 31 is an enlarged view of the rotating portion of the upper wind direction plate mainly during the cooling operation of the indoor unit. FIG. 32 is an enlarged view of the rotating portion of the upper wind direction plate in the other operation state of the indoor unit, (a) when stopped, (b) mainly during cooling / air blowing operation, and (c) mainly air blowing. It is during driving. FIG. 33 is an enlarged view of the rotating portion of the upper wind direction plate in the other operation state of the indoor unit. FIG. 33A is mainly during the air blowing / weak heating operation, and FIG. 33B is mainly during the strong heating operation.

  In the air conditioner of the fourth embodiment, the cross-sectional shape of the groove portion 24c of the air conditioner of the second embodiment is changed from a semicircular shape to a semi-oval shape so that the room air entering the blowing air passage during the cooling operation increases. Further, a ventilation opening 291h is provided in the wind shielding surface 291e of the wind direction piece 291 of the upper wind direction plate 29, and the shaft side gap forming part 291b, the cover side gap forming part 292b, and the groove part as in the air conditioner of the third embodiment. A ventilation opening 291h is provided instead of enlarging the gap between 24c. Other parts are the same as those in the second embodiment.

  In the air conditioner of the fourth embodiment, as shown in FIG. 30, the ventilation opening 291h is provided at the base portion of the wind shielding surface 291e with the rotation shaft 29a. Therefore, during cooling operation, as shown in FIG. The room air on the upper surface of the upper wind direction plate 29 flows from the ventilation opening 291h. Thus, as in the third embodiment, the upper wind direction plate 29 does not directly touch the flow of the blown air that travels straight through the blown air passage 280 as indicated by the large arrows in FIGS. 30 and 31. The temperature of the upper surface rises and condensation is reduced.

  Thus, during the cooling operation, the position of the ventilation opening 291h is such that the opening end is located outside the extension line of the front casing 280a (upper side in FIGS. 30 and 31) regardless of the rotational position of the upper wind direction plate 29. To. As shown in FIG. 31 and FIG. 32 (b), when the wind shield surface 291e and the extension line of the front casing 280a do not intersect or at a shallow angle, the indoor air above the upper wind direction plate 29 from the ventilation opening 291h As described above, the air is sucked and flows between the blown air and the wind shield surface 291e, and acts to prevent the blown air from directly touching the wind shield surface 291e.

  Further, as shown in FIG. 33 (a), when intersecting at a deep angle, the blown air escapes from the ventilation opening 291h to above the upper wind direction plate 29. When intersecting at an intermediate angle between them, as shown by a small arrow in FIG. 32 (c), the blowout air that exits the ventilation opening 291h and the indoor air that attempts to enter compete with each other, so that there is almost no exit / entry. Become.

  As described above, the rotation range of the upper wind direction plate 29 during the cooling operation is centered on the position shown in FIG. 7B, and the lower range is the position during the cooling / air blowing operation shown in FIG. It is sufficient to consider up to. At this time, since the upper wind direction plate 29 generally does not intersect with the extended line of the wind shielding surface 291e and the front casing 280a or intersects at a shallow angle, the blown air is as shown by the large arrows in FIG. 31 and FIG. 32 (b). The indoor air on the upper surface of the upper wind direction plate 29 flows between the blown air and the wind shielding surface 291e through a ventilation opening 291h as indicated by a small arrow.

  Therefore, at the rotational position of the upper wind direction plate 29 during the cooling operation, the indoor air on the upper surface of the upper wind direction plate 29 flows between the blown air and the wind shielding surface 291e as indicated by a small arrow, and the wind shielding surface 291e is Since there is no direct contact with the cold blown air, the temperature of the upper surface of the upper wind direction plate 29 is not lowered and the dew condensation on the upper surface is reduced even without attaching a heat insulating sheet to the upper wind direction plate 29. Even when the temperature is high, there is little risk of soiling the room with condensed water droplets.

  Also in Example 4, at the start of heating operation where the blown air is to be sent downward as much as possible (when the room temperature is low and the temperature near the floor is to be raised rapidly), as shown in FIG. The surface 291e is applied to the connecting portion between the groove 24c and the front casing 280a to prevent the blown air from flowing into the ventilation opening 291h. Thereby, it is interrupted | blocked by the wind-shielding surface 291e, and all of blowing air heads below, and warms a floor surface effectively.

  Thus, by devising the position of the ventilation opening 291e and the inclination of the front casing 280a, it is not necessary to stick a heat insulating sheet to the upper wind direction plate 29 in any operation type such as cooling or heating.

  As described above, when strong heating is desired, the windshield surface 291e is operated against the connecting portion between the groove 24c and the front casing 280a. However, in the case of other gentle heating, the air volume is reduced. Therefore, as shown in FIG. 33 (a), even if the air blown out from the vent opening 291h, the air sucking room air is weak enough to cause a short circuit. Since it does not occur and there is no need to warm the floor surface, it is a heating operation sufficiently adapted to the heating needs in this state.

  As described above, the air conditioner according to the embodiment has a ventilation opening that penetrates the upper wind direction plate at a position outside the blowout air passage at the rotational position of the upper wind direction plate during the cooling operation of the wind shielding surface of the upper wind direction plate. Was provided.

  Thus, during the cooling operation, the room air on the upper surface of the upper wind direction plate flows into the blown air from this ventilation opening. As a result, the upper wind direction plate does not directly touch the flow of the blown air that goes straight through the blown air passage, the temperature of the upper surface of the upper wind direction plate rises, and condensation is reduced. In this case, if the amount of air leakage from the gap between the rotating shaft and the groove is small, it is convenient as much as possible, and adjustment of the amount of leakage as described above is unnecessary.

  In this way, the ventilation opening does not intersect the extension line of the front casing and the front casing so that the opening end is located outside the extension line of the front casing regardless of the rotation position of the upper wind direction plate, When crossing at a shallow angle, the indoor air above the upper wind direction plate is sucked from the ventilation opening and flows between the blowing air and the wind shielding surface as described above, and the blowing air directly touches the wind shielding surface. It works to prevent.

  This suppresses the temperature drop on the windshield surface, reduces the risk of condensation on the top of the windshield surface, and reduces the condensation on the upper surface of the upper wind direction plate even without attaching a heat insulating sheet to the upper wind direction plate. Even when the indoor humidity is high, there is less risk of contaminating the room with condensed water droplets.

  For this reason, it is not necessary to adjust the amount of air leakage from the gap between the rotating shaft and the groove, and the heat insulating material on the upper surface of the windshield surface can be omitted, thereby providing an air conditioner that saves resources.

  Next, the upper wind direction plate of the air conditioner of Example 5 will be described with reference to FIGS. 34 to 37. FIG. 34 is a cross-sectional view of the air outlet of the indoor unit of the air conditioner according to the fifth embodiment. FIG. 35 is an enlarged view of the rotating portion of the upper wind direction plate during the cooling operation of the indoor unit. FIG. 36 is an enlarged view of the rotating portion of the upper wind direction plate in another operation state of the indoor unit, (a) when stopped, (b) mainly during cooling / air blowing operation, and (c) mainly air blowing. It is during driving. FIG. 37 is an enlarged view of the rotating portion of the upper wind direction plate in the other operation state of the indoor unit. FIG. 37A is mainly during the air blowing / weak heating operation, and FIG. 37B is mainly during the strong heating operation.

  The air conditioner of Example 5 is provided with an opening cover 291j so as to cover the ventilation opening 291h of the upper wind direction plate 29 of the air conditioner of Example 4, and the other parts are the same as those of Example 4. . In the air conditioner of the fourth embodiment, during the cooling operation, the air is sucked by the flow of the blown air as shown in FIGS. 31 and 32 (b), passes through the ventilation opening 291h of the upper wind direction plate 29, and as shown by the small arrow, Indoor air flows into the blowout air passage 280.

  Even in the air conditioner of the fifth embodiment, during the cooling operation, as shown in FIGS. 34, 35, and 36 (b), as in the fourth embodiment, the small air-flowing plate 29 passes through the ventilation opening 291h of the upper wind direction plate 29. As described above, the room air flows into the blowout air passage 280 and flows between the cold blowout air and the upper wind direction plate 29, so that the upper wind direction plate 29 is not cooled excessively, dew condensation is reduced, and the room is contaminated with dew condensation water. Is preventing.

  When the upper wind direction plate 29 is rotated as shown in FIG. 37A during the heating operation, warm blown air passes through the ventilation opening 291h and is on the upper surface side of the upper wind direction plate 29 (left side in FIG. 37A). However, since the opening cover 291j is provided in the vent opening 291h, the leaked blown air is turned downward, flows downward along the upper surface of the upper wind direction plate 29, and flows into the upper wind direction plate. At the tip of 29, it merges with the main air flow on the wind path side, and effectively warms the vicinity of the floor.

  At this time, a part of the blown air leaking from the ventilation opening 291h rises due to natural convection and reaches the air suction port of the air conditioner, but the amount is slightly smaller than the amount flowing downward. The air conditioning control is not disturbed and the heating operation is not hindered.

  Thus, the air conditioner of the example provided the opening cover so as to cover the ventilation opening on the side opposite to the blowout air passage of the ventilation opening of the upper wind direction plate.

  As a result, when the upper wind direction plate is faced down, such as during heating operation, even if the ventilation opening enters the flow path of the blown air, the blowout leaked through the ventilation opening to the anti-blowing side of the windshield. The air is deflected downward by the opening cover, flows downward along the anti-blow air path side of the upper wind direction plate, merges with the main air flow on the air flow side at the tip of the upper wind direction plate, and effectively warms near the floor surface. .

  For this reason, the air conditioner which prevents a short circuit at the time of heating and makes blowing air effectively face down can be provided.

  Next, the upper wind direction plate of the air conditioner of Example 6 will be described with reference to FIGS. 38 to 41. FIG. 38 is a cross-sectional view of the air outlet of the indoor unit of the air conditioner according to the sixth embodiment. FIG. 39 is an enlarged view of the rotating portion of the upper wind direction plate during the cooling / air blowing operation of the indoor unit. FIG. 40 is an enlarged view of the rotating portion of the upper wind direction plate in the other operation state of the indoor unit, (a) when stopped, (b) mainly during cooling operation, and (c) mainly during blowing operation. It is. FIG. 41 is an enlarged view of the rotating portion of the upper wind direction plate in the other operation state of the indoor unit. FIG. 41A is mainly during the air blowing / weak heating operation, and FIG. 41B is mainly during the strong heating operation.

  In the air conditioner of the sixth embodiment, the room air entering the blowing air passage during the cooling operation is increased, and the blowing air leaking during the heating operation is reduced. For this reason, in the air conditioner of the sixth embodiment, the cross-sectional shape of the groove portion 24c of the air conditioner of the first embodiment is changed from a semicircular shape to a semi-oval shape having a larger diameter, and a protrusion is provided on the groove portion 24c of the lower panel 24, The gap forming portion 24q is the same as the first embodiment except for the other portions.

  Thus, by providing the protrusions in the groove 24c, when the upper wind direction plate 29 is turned to the lowest position during the heating operation, the axial gap forming portion 291b of the upper wind direction plate 29 and the groove side gap forming portion 24q And the air blown out from this portion does not leak.

  In the air conditioner of the first embodiment, during the cooling operation, as shown in FIGS. 9 (b) and 11 (b), the air conditioner is attracted by the flow of the blown air, and the shaft side gap forming portion 291b of the upper wind direction plate 29, the cover side gap Through the gap between the forming portion 292b and the groove portion 24c, the room air flows into the blowing air passage 280 as indicated by a small arrow.

  Even in the air conditioner of Example 6, during cooling operation, as shown in FIGS. 38, 39, and 40 (b), FIGS. 11 (a), 11 (b), and 9 (b) of Example 1 are used. Similarly, through the gap Gp between the rotating shaft 29a and the groove 24c, as shown by a small arrow, more room air flows from the first embodiment than the first embodiment into the blowing air passage 280, and between the cold blowing air and the upper wind direction plate 29. This prevents the upper wind direction plate 29 from being excessively cooled, reduces condensation, and prevents the indoors from being contaminated with condensed water.

  When performing gentle heating, the rotational position of the upper wind direction plate 29 is set to FIG. 41A, so that the warm blown air passes through the gap Gp between the rotational shaft 29a and the groove 24c and the upper surface of the upper wind direction plate 29. Leak to the side (left side in FIG. 41 (a)) and a small short circuit occurs. However, since the groove-side gap forming portion 24q is provided to form the gap Gp between the rotating shaft 29a and the groove portion 24c, and the gap Gp is reduced, the amount of the blown-out air that leaks is small, which hinders the heating operation. Not so good.

  In this case, most of the blown air is blocked by the wind-shielding surface 291e, changes its direction downward, and warms up near the floor surface. It is not a case where gentle heating is desired and the vicinity of the floor has to be warmed or not, so that the heating operation is sufficiently adapted to the heating needs in this state.

  When strong heating is desired, the upper wind direction plate 29 is set to the position shown in FIG. 41B, and the gap Gp between the rotating shaft 29a and the groove 24c is made almost zero. By doing so, the amount of the blown air that leaks from the blown air passage 280a to the left side of the upper wind direction plate 29 through the gap between the rotating shaft 29a and the groove 24c can be made almost zero, and almost the whole amount of the blown air can be reduced. It can be sent close to the floor to heat the room powerfully.

  Thus, by reducing the gap Gp between the rotation shaft 29a and the groove 24c as the upper wind direction plate 29 is directed downward, a large amount of room air flows into the blowout air passage 280 during the cooling operation, and the upper wind direction plate 29 So as not to touch the cold blown air directly, the upper wind direction plate 29 and the blown air are effectively separated, and during the heating operation, the upper wind direction plate 29 is rotated so that the blown air is directed downward. Leakage of blown air is reduced, and blown air can be effectively sent to the floor surface.

  As described above, the air conditioner according to the embodiment is configured such that the protrusion is provided on the inner surface of the groove, and the protrusion and the shaft-side gap forming portion of the rotating shaft can be brought into contact with each other.

  As a result, during cooling operation, the room air flows through the gap between the rotating shaft and the groove and flows into the blowout air passage, flows between the cold blowout air and the upper airflow direction plate, the upper airflow direction plate is not cooled excessively, and there is little condensation. This prevents the room from getting dirty with condensed water.

  When performing gentle heating, change the rotational position of the upper wind direction plate, warm air blows through the gap between the rotational shaft and the groove, leaks to the upper surface side of the upper wind direction plate (anti-blow air path side) and makes a small short A circuit occurs. However, since the groove-side gap forming portion is provided to form the gap between the rotating shaft and the groove portion, and the gap is small, the amount of the blown-out air that leaks out is small and does not hinder the heating operation.

  In this case, most of the blown air is blocked by the wind-shielding surface and turns downward, warming up near the floor. It is not a case where gentle heating is desired and the vicinity of the floor has to be warmed or not, so that the heating operation is sufficiently adapted to the heating needs in this state.

  When strong heating is desired, the upper wind direction plate is set to the lowest position, and the gap between the rotating shaft and the groove is made almost zero. By doing so, the amount of the blown air leaking from the blown air passage to the left side of the upper wind direction plate through the gap between the rotating shaft and the groove can be made almost zero, and almost all the blown air is brought close to the floor surface. It can send and heat the room powerfully.

  For this reason, the clearance gap between a rotating shaft and a groove part can be set appropriately according to the rotation position of an upper wind direction board, and the air conditioner which can make condensation suppression and a heating effect compatible can be provided.

  As described above, according to the air conditioner of the first aspect, in the air conditioner having a plurality of upper and lower wind direction plates that deflect the air direction of the blown air upward and downward at the air outlet, The upper wind direction plate is provided so as to be rotatable in the vertical direction so that no airflow flows between the upper wind direction plate and the upper surface of the blowing air passage. It is composed of a surface to be formed and a surface formed to be bent upward in a U shape from the downstream end of the airflow of the surface forming the extended surface, and in a blowing state near the horizontal direction, A flow path is formed between the surface up to the bent portion and the surface up to the downstream end of the airflow of the lower wind direction plate, and in the state of blowing downward, From the surface that forms the extended surface of the upper surface and the edge of this surface And it formed surfaces as bent shape, and the arrangement for forming a flow path between the surface of the end portion of the downstream side of the airflow of the lower louver. As a result, it is possible to provide an air conditioner that can sufficiently ensure the air-conditioning capability by sufficiently ensuring the directivity of the air flow or the air blowing performance in both the horizontal direction and the downward direction.

  In addition, the surface formed so as to be bent upwardly from the downstream end of the airflow of the surface forming the extension surface so as to cover the front of the lower front portion of the indoor unit. The appearance of the indoor unit can be improved. Moreover, it is preferable on the ventilation performance to a horizontal direction and a downward direction that the partial angle bent in the shape of a dogleg of the said upper wind direction board is the range of 114 to 156 degree | times.

  As a result, when the operation of the air conditioner is stopped, the upper wind direction plate and the lower wind direction plate are stopped after being turned upward, so that the wind shielding surface starting from the rotation axis of the air outlet and the upper wind direction plate Concealed with a wind direction plate, the exterior of the indoor unit can be made into a smooth shape with little unevenness. Furthermore, when a human sensor for detecting the state of the indoor living space is provided, it can be hidden by the upper wind direction plate. In this case, the human sensor can be hidden by the wind direction surface of the upper wind direction plate that is substantially perpendicular to the direction of the human sensor, and a useless space can be saved. Also, the direction of the human sensor is in the range of 30 to 50 degrees from the floor, the inclination angle of the front casing is in the range of 15 to 25 degrees, and the inclination of the blowout surface (virtual surface at the air outlet opening end) is 10 degrees Can be within a range of 25 degrees, and an appropriate blowing air path, blowing surface, and arrangement of human sensors can be realized.

  In addition, if the angle pasted by the reference line is less than 114 degrees at the position of the maximum height of the wind direction surface from the reference line, the information of the person who is close to the air conditioner with the person sensor facing too high When the upper wind direction plate is closed and stowed when the operation is stopped, the distance from the lower wind direction plate becomes too wide and wasteful. It becomes a space, and the use efficiency of the space decreases.

  In addition, if an attempt is made to eliminate the useless space, the inclination of the blow-out surface becomes small, and it becomes difficult to deliver the cold air to a wide area in the room with a slightly upward air direction during cooling. There is a risk that it will be difficult to control the air direction slightly upward during cooling, for example, the position of the upper wind direction plate when shutting down will be too close, and it will not be possible to adjust the direction of the wind to send cool blown air to far away indoors during cooling operation. Becomes stronger.

  Also, when the air flow of the upper wind direction plate and the lower wind direction plate are made almost parallel and the blown air is compressed and accelerated and sent to far away in the room, the flow of the blown air changes from the compressed flow to the parallel flow. Since the direction of flow changes in this part, if the direction change in this part is large (the angle at which it is applied is small), vortices are likely to occur, causing noise and a reduction in air volume, resulting in high-quality and effective air conditioning. It becomes difficult to do.

  In order to solve these problems, an extra space is required around the upper wind direction plate and the human sensor mounting part, and the use efficiency of the space decreases, leading to an increase in volume, contrary to resource savings, distribution costs, etc. It leads to up.

  On the other hand, if the pasting angle exceeds 156 degrees, the direction of the human sensor is too downward and there is a strong possibility that information on a person who is far from the air conditioner cannot be acquired sufficiently. When the upper wind direction plate is closed and stored when the operation is stopped, the lower wind direction plate is too close to the lower wind direction plate. It becomes difficult to make the appearance on the upper wind direction plate smooth and continuous, and the appearance is impaired.

  In addition, if the appearance is made to continue smoothly, the slope of the blowout surface becomes large, making it difficult to make the wind direction sufficiently downward at the start of heating operation, and the position of the upper wind direction plate during operation of the air conditioner From this, the angle until it is stored in the position where it is stored becomes large, and it is necessary to take a wide area that does not interfere with the upper wind direction plate, so that the space utilization efficiency is lowered. Furthermore, since the upper wind direction plate approaches the flat plate, the rigidity decreases, the deformation when the upper wind direction plate is held almost horizontally increases, the feeling of luxury is lost, the product image is down, and the quality of the appearance is degraded. To do.

  In order to solve these problems, as in the case where the angle at which the reference line is pasted is too small, an extra space is required around the upper wind direction plate and the human sensor mounting portion, and the use efficiency of the space is reduced. Will lead to an increase in distribution costs, contrary to resource savings.

  For this reason, the air outlet has an appropriate structure around the air outlet, and the exterior of the indoor unit has a smooth shape with little unevenness when stopped, and the human sensor is hidden by the upper wind direction plate so as not to disturb the calm atmosphere in the room. You can get a chance.

  According to the air conditioner of claim 2, the inclination of the upper wind direction plate is such that the room air flows into the blowout air passage from the gap between the rotation axis of the upper wind direction plate and the groove portion of the lower panel during the cooling operation. To control.

  As a result, the upper wind direction plate is prevented from directly touching the cold blown air, the temperature of the upper wind direction plate is maintained, the condensation of the upper wind direction plate is suppressed, the dripping of the condensation into the room is also suppressed, The risk of getting dirty is reduced.

  For this reason, there can be obtained an air conditioner with less dew condensation and less risk of soiling the room.

  Further, according to the air conditioner of the third aspect, the upper wind direction plate is rotated so that the gap between the rotation axis of the upper wind direction plate and the groove portion of the lower panel is minimized within the rotation range of the upper wind direction plate during the heating operation. When cooling at the rotating position of the upper wind direction plate where the minimum clearance during heating in the moving position is the rotation range of the upper wind direction plate during cooling operation and the gap between the rotation axis of the upper wind direction plate and the groove of the lower panel is minimized Less than the minimum gap.

  As a result, during heating operation, the amount of the blown air that leaks into the room through the gap between the rotating shaft of the upper wind direction plate and the groove of the lower panel is reduced, the short circuit is suppressed, and the amount of the blown air that leaks out Therefore, the downward blowing air can be efficiently delivered to the floor surface.

  For this reason, the short circuit at the time of heating is suppressed and the air conditioner which can deliver blowing air to the floor surface vicinity can be obtained.

  According to the air conditioner of the fourth aspect, the upper wind direction plate rotates from the rotation position of the upper wind direction plate during the cooling maximum capacity operation to the closed state of the upper wind direction plate when stopped. The angle is 18 to 51 degrees.

  Thus, similarly to the air conditioner of claim 1, when the operation of the air conditioner is stopped, the upper wind direction plate and the lower wind direction plate are stopped after being directed upward, so that the air outlet port and the upper wind direction plate The air-shielding surface starting from the rotating shaft can be hidden by the lower wind direction plate to make the exterior of the indoor unit a smooth shape with less irregularities and to detect the state of the indoor living space. By hiding the installed human sensor with the upper wind direction plate, the feeling of resistance to what is seen is wiped out and the calm atmosphere in the room is not disturbed.

  Also in this case, as in the air conditioner according to the second aspect, it is possible to realize proper arrangement of the blowing air path, the blowing surface and the human sensor.

  If the rotation angle exceeds 51 degrees, the angle from the position of the upper wind direction plate during operation of the air conditioner to the position where it is stored becomes larger, and a wide area that does not interfere with the upper wind direction plate is taken. When necessary, the space utilization efficiency is reduced, and when the upper wind direction plate is closed and stored when the operation is stopped, the distance from the lower wind direction plate is too close to the upper side of the air conditioner. It becomes difficult to make the appearance on the wind direction plate smoothly continuous, and the appearance is impaired. Furthermore, if the appearance is made to continue smoothly, the slope of the blowout surface becomes large, and it becomes difficult to make the wind direction sufficiently downward at the start of heating operation.

  Further, during the cooling maximum capacity operation, the compressor is operated at the maximum cooling speed, and the resistance of the wind direction plate is minimized so as to maximize the blown air volume. This state can be realized by blowing the blown air that has come out of the blown air passage in the same direction without any restrictions. For this reason, the position and rotation angle of the rotation axis of the upper wind direction plate are selected so that the wind shielding surface of the upper wind direction plate is positioned on the extension of the inclination angle of the front casing.

  On the other hand, the inclination angle (sensor surface angle) of the sensor surface equipped with sensors such as human sensors for obtaining indoor information with respect to the floor surface as viewed from the side of the air conditioner is the sensor direction (the sensitivity of the sensor is the maximum). Is the complement of the angle with the floor surface as viewed from the side of the air conditioner, and as described above, the angle from 40 degrees to 60 degrees (the direction of the sensor as viewed from the side of the air conditioner) 30 degrees to 50 degrees).

  When the operation is stopped, the sensor surface is covered with the wind direction surface of the upper wind direction plate, so that the room can have a calm atmosphere. If the rotation angle of the upper wind direction plate from this state to the state at the time of the maximum capacity operation of the cooling is set excessively, the inclination angle of the wind shielding surface becomes large, inevitably increasing the inclination angle of the front casing. Thus, the direction of the blown-out air becomes more downward, making it difficult to use the room in a wide range with a slight upward during cooling.

  Also, when the windshield surface is excessively deviated from the shaft angle base line, the rotation angle becomes large. In this case, a large space between the rotation shaft and the front casing must be taken, and a useless space increases. Furthermore, if the tilt angle and the sensor surface angle of the front casing are maintained and the rotation angle is excessively increased, the angle at which the reference line is pasted at the highest point of the upper wind direction plate described above increases, and the upper wind direction plate is flat. The rigidity decreases, the deformation when the upper wind direction plate is held substantially horizontal increases, the feeling of luxury is lost, the image of the product is reduced, and the quality of the appearance is deteriorated.

  On the other hand, if the rotation angle is less than 18 degrees, the position of the upper wind direction plate during normal cooling and the storage position of the upper wind direction plate during operation stop are too close, and cool air is sent far away in the room during cooling operation. There is a strong risk that it will be difficult to control the air direction slightly upward during cooling, for example, it becomes impossible to adjust the air direction.

  Also, when the upper wind direction plate is closed and stowed when the operation is stopped, the distance from the lower wind direction plate becomes too large, resulting in wasted space, reducing the use efficiency of the space, and trying to eliminate the wasted space. The inclination of the surface becomes small, and it becomes difficult to deliver the cold air over a wide area in the room with a slightly upward air direction during cooling.

  In addition, if the rotation angle of the upper wind direction plate from the state in which the sensor surface is covered with the wind direction surface of the upper wind direction plate at the time of operation stop to the state at the time of the maximum capacity operation of the cooling is set too small, the inclination angle of the wind shielding surface As a result, the inclination angle of the front casing is inevitably reduced, and the direction of the blown air becomes more upward, making it difficult to deliver the blown air downward to the floor during heating.

  Also, if the windshield surface is too close to the shaft angle base line, the rotation angle will be small, but in this case, the size of the rotation shaft must be reduced, and the rotation shaft must be sufficiently strong. This makes it difficult to operate the upper wind direction plate smoothly. In the worst case, the upper wind direction plate may be damaged, and the reliability of the air conditioner is greatly reduced.

  Also, when the air flow of the upper wind direction plate and the lower wind direction plate are made almost parallel and the blown air is compressed and accelerated and sent to far away in the room, the flow of the blown air changes from the compressed flow to the parallel flow. Since the direction of flow changes in this part, if the direction change in this part is large (the angle at which it is applied is small), vortices are likely to occur, causing noise and a reduction in air volume, resulting in high-quality and effective air conditioning. It becomes difficult to do.

  For this reason, the air outlet has an appropriate structure around the air outlet, and the exterior of the indoor unit has a smooth shape with little unevenness when stopped, and the human sensor is hidden by the upper wind direction plate so as not to disturb the calm atmosphere in the room. You can get a chance.

  According to the air conditioner of claim 5, the length of the line connecting the rotation axis center and the highest point, which is the length of the wind-shielding surface, is a blowout in a plane perpendicular to the rotation axis. 40 to 60% of the airway height.

  As a result, the upper wind direction plate is rotated downward as much as possible during the heating operation, nearly half of the blown air blown in the tilt direction of the front casing is blocked by the wind shield surface, and turned downward to continue to the wind shield surface. The blown air can be contracted by the wind direction surface and the lower wind direction plate, and the speed can be increased and sent downward.

  In this case, if the length of the wind shielding surface is less than 40% of the height of the blowing air passage, the blown air is not sufficiently turned downward, and the wind direction surface and the lower wind direction plate following the wind shielding surface are provided. Also, the contracted flow and the speed increase due to the above become insufficient, and effective heating at the start of the heating operation becomes difficult.

  On the other hand, when the length of the wind shielding surface exceeds 60% of the height of the blowing air passage, the downward rotation of the blowing air is performed without any trouble, but it is caused by the subsequent wind direction surface and the lower wind direction plate. The contracted flow becomes excessive, the amount of blown air decreases, and the risk that the blown air will not reach the floor surface increases.

  For this reason, the blown air reaches the floor surface at the start of the heating operation, and an air conditioner that exhibits an excellent heating effect can be obtained.

  According to the air conditioner of the sixth aspect, the opening cover is provided so as to cover the ventilation opening on the side opposite to the blowing air passage of the ventilation opening of the upper wind direction plate.

  As a result, when the upper wind direction plate is faced down, such as during heating operation, even if the ventilation opening enters the flow path of the blown air, the blowout leaked through the ventilation opening to the anti-blowing side of the windshield. The air is deflected downward by the opening cover, flows downward along the anti-blow air path side of the upper wind direction plate, merges with the main air flow on the air flow side at the tip of the upper wind direction plate, and effectively warms near the floor surface. .

  For this reason, the air conditioner which prevents a short circuit at the time of heating and makes blowing air effectively face down can be obtained.

  Moreover, according to the air conditioner of Claim 7, the said clearance gap formation part is provided in one place.

  Thereby, the amount of leaked air at the time of cooling and heating is managed to an appropriate amount by adjusting the gap at the gap forming portion. Specifically, when the upper airflow direction plate is in the cooling operation position, an appropriate amount of leaked air should be leaked to the blowout air passage side, and at the start of heating operation where the blown air should be sent as low as possible (room temperature is low, When you want to quickly raise the temperature near the floor), apply the wind shield to the connection between the groove and the front casing.

  As a result, the blown air is prevented from flowing into the gap between the shaft side gap forming part and the cover side gap forming part and the groove part, and is blocked by the wind shielding surface. Warm up effectively.

  For this reason, it is possible to obtain an air conditioner that can appropriately control the amount of leakage both at the time of cooling and at the time of heating, to suppress condensation, and to effectively heat the floor surface at the time of heating.

  Moreover, according to the air conditioner of Claim 8, the cross section perpendicular | vertical to the said rotating shaft of the said groove part is a concave shape which makes a part of ellipse.

  As a result, the position of the rotation shaft is moved away from the front casing so that the rotation shaft is surely retracted from the cold blown air that goes straight, and at this time, between the rotation shaft and the groove portion on the front casing side. A heat insulating sheet is stuck in a wider gap as possible to suppress condensation in this part. In this case, by increasing the gap between the rotating shaft and the groove portion, during the cooling operation, more room air on the upper surface of the upper wind direction plate flows from this gap.

  In this way, during the cooling operation, a lot of room air flows into the blowing air passage through the wide gap between the shaft side gap forming portion and the cover side gap forming portion and the groove portion. The indoor air on the upper surface of the upper wind direction plate that has flowed in covers the wind shielding surface and wind direction surface of the upper wind direction plate, so that the cold blown air indicated by the large arrow is not directly touched, and the temperature of the upper surface of the upper wind direction plate increases. , Condensation is reduced.

  For this reason, the cross-sectional shape of the groove portion is made into a semi-oval shape so that the rotating shaft is reliably retracted from the cold blown air that goes straight, and the position of the rotating shaft is kept away from the front casing. At this time, a wider gap is formed between the rotating shaft and the groove portion on the front casing side, and a heat insulating sheet is stuck in this gap as will be described next.

  This is because the groove near the front casing that is in direct contact with the cold blown air is cooled to a low temperature, so that the upper wind direction plate flows from the gap between the shaft side gap forming part and the cover side gap forming part and the groove part. In order to prevent moisture from falling when the moisture in the room air on the top surface of the top is condensed and the room humidity is high, heat insulation is provided at the part near the front casing of the groove part with a semi-oval cross section. This is because dew condensation is suppressed by sticking the adhesive sheet.

  For this reason, the dew condensation of the last flow part of a front side casing is suppressed, and the air conditioner with little fear of polluting a room | chamber interior can be obtained.

  According to the air conditioner of the ninth aspect, the protrusion is provided on the inner surface of the groove, and the protrusion and the shaft-side gap forming portion of the rotating shaft are configured to be able to contact each other.

  As a result, during cooling operation, room air flows through the gap between the rotating shaft and the groove and flows into the blowout air passage, flows between the cold blowout air and the upper airflow direction plate, the upper airflow direction plate is not cooled excessively, and condensation is low. This prevents the room from getting dirty with condensed water.

  When performing gentle heating, change the rotational position of the upper wind direction plate, warm air blows through the gap between the rotational shaft and the groove, leaks to the upper surface side of the upper wind direction plate (anti-blow air path side) and makes a small short A circuit occurs. However, since the groove-side gap forming portion is provided to form the gap between the rotating shaft and the groove portion, and the gap is small, the amount of the blown-out air that leaks out is small and does not hinder the heating operation.

  In this case, most of the blown air is blocked by the wind-shielding surface and turns downward, warming up near the floor. It is not a case where gentle heating is desired and the vicinity of the floor has to be warmed or not, so that the heating operation is sufficiently adapted to the heating needs in this state.

  When strong heating is desired, the upper wind direction plate is set to the lowest position, and the gap between the rotating shaft and the groove is made almost zero. By doing so, the amount of the blown air leaking from the blown air passage to the left side of the upper wind direction plate through the gap between the rotating shaft and the groove can be made almost zero, and almost all the blown air is brought close to the floor surface. It can send and heat the room powerfully.

  For this reason, the clearance gap between a rotation axis | shaft and a groove part can be set appropriately according to the rotation position of an upper wind direction board, and the air conditioner which can make condensation suppression and a heating effect compatible can be obtained.

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Indoor unit 5 Remote control 6 Outdoor unit 8 Connection piping 20 Housing | casing 21 Housing | casing base 22 Unit frame 23 Decorative frame 24 Lower panel 24a, 24b Support part 24c Groove part 24d Support piece 24e Support shaft 24f Lower panel support 24g Bottom Panel engaging claw 24h Upper fixing part 24j Opening cover storage part 24k External appearance component part 24m Lower end part 24p Thermal insulation sheet 24q Groove side gap formation part 24r Condensation suppression sheet 25 Cosmetic panel 26 Support bush 27 Upper air inlet 27 'Front air inlet Port 28 Air outlet port 29 Upper wind direction plate 29a Rotating shaft 29b Gap holding portion 29c Hollow portion 29d Driving force transmitting portion 29e Support shaft end 29 'Lower wind direction plate 33 Indoor heat exchanger 35 Dew tray 35a Lower panel engagement hole 35b Upper seat 37 Drain piping 230 Air suction part 231 Upper filter 231 ' Luther 251 Suction panel 280 Blowing air path 280a Front casing 280b Rear casing 285 Left and right wind direction plates,
287 Drive motor 287a Drive shaft 291 Wind direction piece 291a Rotating shaft portion 291b Shaft side gap forming portion 291c Transmitted portion (hollow portion)
291d Wind direction surface 291e Wind shield surface 291f Flat portion 291g Semi-cylindrical portion 291h Ventilation opening 291j Opening cover 292 Right transmission shaft cover 292b Cover side gap forming portion 293 Left shaft cover 296 Transmission member 297 Support member 298 Shaft cover fixing screw 311 Blower fan 313 Blower motor 390 Sensor mounting board 391 Light source sensor 392 Sound sensor 393 Infrared sensor 395 Transmitter 396 Receiver 397 Display unit 902 Room 902a Floor surface 902b Wide room wall surface 902c Narrow room wall surface BL Reference line Bt Butt section Dh Air outlet height Length DL Wind direction representative line ECL Front casing extension line EJL Axis angle base line extension line Ey Eye of person looking into air conditioner FS Sensor surface Gp Gap H Wind direction plate height HL Horizontal line JL Axis angle base line L Reference line length Lp Length of passage OL When stopped Wind direction plate outline P Wind direction plate highest point SL Wind shield surface representative straight line Sn Axis angle base line length (wind shield surface length)
α Front casing angle β Air outlet surface storage angle γ Sensor surface angle γ1 Sensor surface angle γ2 mainly for large rooms Sensor surface angle γ2 Mainly narrow room sensor surfaces angle δ Wind shield surface-shaft angle ε Air outlet surface-shaft storage angle ζ Wind direction surface-axis angle = formation angle η Rotation angle from cooling to storage θs Angle that the shaft cover sticks in the room ι Wind direction storage angle κ Front casing-Wind surface angle λ Sensor direction λ1 Sensor mainly for large rooms Direction λ2 Direction of sensor for mainly narrow room μ1 Practical sensing range of sensor for mainly large room μ2 Practical sensing range of sensor for mainly narrow room ν Angle at which the reference line is pasted at the highest point of the wind direction plate

Claims (4)

An upper vertical wind direction plate and a lower vertical wind direction plate for deflecting the wind direction of the blown air up and down at the air outlet ;
A lower panel that is located above the air outlet and forms a housing;
The upper wind direction plate has a first surface and a second surface connected to the rotation shaft of the upper wind direction plate by the first surface;
The lower panel has a groove portion in which a rotation axis of the upper wind direction plate is disposed,
The angle of the lower vertical wind direction plate in the air blowing state near the horizontal direction is closer to the angle of the first surface than the angle of the second surface,
Angle of the lower horizontal flaps at blowing state in the downward direction, the near rather the angle of the first and the second plane than the angle of the surface,
In the rotation range of the upper wind direction plate during heating operation, the heating minimum gap at the rotation position of the upper wind direction plate where the clearance between the rotation shaft of the upper wind direction plate and the groove portion of the lower panel is minimized. In the rotation range of the upper wind direction plate during cooling operation, the minimum clearance during cooling at the rotation position of the upper wind direction plate where the clearance between the rotation shaft of the upper wind direction plate and the groove portion of the lower panel is minimized An air conditioner characterized by being smaller .   2. The air conditioner according to claim 1, wherein the first surface has a concave shape in the windward direction when the air is blown downward.   2. The air conditioner according to claim 1, wherein a rotation angle of the upper wind direction plate from a rotation position of the upper wind direction plate during cooling maximum capacity operation to a state where the upper wind direction plate is closed at the time of stop is 18 to. An air conditioner characterized by being 51 degrees.   2. The air conditioner according to claim 1, wherein a length of the first surface is 40 to 60% of a height of an air outlet of the air outlet.